diff --git a/CHANGES.rst b/CHANGES.rst
index 077232c0fa..f1414a2a52 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -16,6 +16,7 @@
     - uses dither offeset recorded in the header as default slitmask_offset,
       but the user can provide the maskdef_id of a slit with a bright object that can trace the offset.
     - improvements in the frame typing
+- Implements new Mark4 detector for Keck/LRISr  (aka keck_lris_red_mark4)
 
 
 1.6.0 (1 Oct 2021)
diff --git a/doc/help/LRISr_section_keywords.pdf b/doc/help/LRISr_section_keywords.pdf
new file mode 100644
index 0000000000..8adfa1944f
Binary files /dev/null and b/doc/help/LRISr_section_keywords.pdf differ
diff --git a/doc/lris.rst b/doc/lris.rst
index 3903bef6df..dbb8bed068 100644
--- a/doc/lris.rst
+++ b/doc/lris.rst
@@ -82,8 +82,17 @@ very blue.
 keck_lris_red
 =============
 
-Taking Calibrations for LRISr
-=============================
+Detectors
++++++++++
+
+There have been 3 (or is it 4?!) generations of detectors
+in the LRISr camera.  The original is named `keck_lris_red_orig`,
+the LBNL detectors (2kx4k) are `keck_lris_red` and the newest
+Mark4 detector is `keck_lris_red_mark4`.   
+
+For the latter (Mark4), the wavelengths have been incorporated for the 
+R400 grating only so far but the arxiv solutions from the LBNL detector
+may work ok.  Check the outputs!
 
 LRISr Default Settings
 ++++++++++++++++++++++
@@ -95,10 +104,10 @@ for LRISr::
     settings trace slits pca params [3,2,1,0]
 
 Known issues
-++++++++++++
+============
 
 LRISb Slit Edges
-----------------
+++++++++++++++++
 
 When observing in long-slit mode, PypeIt might set the slit incorrectly
 for detector 2.  This may occur if the counts from the flat field
@@ -123,7 +132,7 @@ Here is an example for the PypeIt file::
 This will force a slit onto the detector for reduction.
 
 Multi-slit
-----------
+++++++++++
 
 The code may identify a 'ghost' slit in empty detector real
 estate if your mask does not fill most of the field.  Be prepared
diff --git a/doc/nb/LRIS_red_mark4.ipynb b/doc/nb/LRIS_red_mark4.ipynb
new file mode 100644
index 0000000000..a127a8c748
--- /dev/null
+++ b/doc/nb/LRIS_red_mark4.ipynb
@@ -0,0 +1,941 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "91756735",
+   "metadata": {},
+   "source": [
+    "# New LRISr Mark4 detector"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "id": "2be99f22",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# imports\n",
+    "import os, glob\n",
+    "import numpy as np\n",
+    "\n",
+    "from matplotlib import pyplot as plt\n",
+    "\n",
+    "from astropy.io import fits\n",
+    "\n",
+    "from pypeit.core import parse\n",
+    "from pypeit.display import display\n",
+    "from pypeit import flatfield"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "337dfda7",
+   "metadata": {},
+   "source": [
+    "# Load data"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "e48ea21b",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "dpath = '/scratch/REDUX/Keck/LRIS/new_LRISr'\n",
+    "rpath = os.path.join(dpath, 'Raw')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "id": "235a6d08",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "dfile = os.path.join(rpath, 'r211004_00003.fits')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "9d8457ec",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "hdul = fits.open(dfile)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "6b763af6",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Filename: /scratch/REDUX/Keck/LRIS/new_LRISr/Raw/r211004_00003.fits\n",
+      "No.    Name      Ver    Type      Cards   Dimensions   Format\n",
+      "  0  PRIMARY       1 PrimaryHDU     344   (4234, 4248)   int16 (rescales to uint16)   \n",
+      "  1  Exposure Events    1 TableHDU        17   3R x 2C   [A26, A80]   \n"
+     ]
+    }
+   ],
+   "source": [
+    "hdul.info()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "c0b473b4",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "raw_data = hdul[0].data.astype(float)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "id": "b2038ca2",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(4248, 4234)"
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "raw_data.shape"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "0d96ec76",
+   "metadata": {},
+   "source": [
+    "# Load pixel file"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "id": "877f812f",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "pix_file = os.path.join(dpath, 'pixelsL2U2L1U1_1_1.fits')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "id": "df5e1ffc",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Filename: /scratch/REDUX/Keck/LRIS/new_LRISr/pixelsL2U2L1U1_1_1.fits\n",
+      "No.    Name      Ver    Type      Cards   Dimensions   Format\n",
+      "  0  PRIMARY       1 PrimaryHDU     217   (4234, 4248)   int16   \n"
+     ]
+    }
+   ],
+   "source": [
+    "hdu_pix = fits.open(pix_file)\n",
+    "hdu_pix.info()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 32,
+   "id": "d01476af",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[8:2064,2185:4248]\n",
+      "[8:2064,1:2064]\n",
+      "[2171:4227,2185:4248]\n",
+      "[2171:4227,1:2064]\n"
+     ]
+    }
+   ],
+   "source": [
+    "for ii in range(4):\n",
+    "    print(hdu_pix[0].header[f'DSEC{ii}'])"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "117f6ccf",
+   "metadata": {},
+   "source": [
+    "# Overwrite header"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "id": "6f1d2922",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "head0 = hdul[0].header"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "id": "448fc8aa",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "for card, value in hdu_pix[0].header.items():\n",
+    "    head0[card] = value"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "926baca1",
+   "metadata": {},
+   "source": [
+    "## Write"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 21,
+   "id": "0ee29e90",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'[2170:2118,4248:2185]'"
+      ]
+     },
+     "execution_count": 21,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "hdul[0].header['BSEC4']"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 22,
+   "id": "b5689a62",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "WARNING: VerifyWarning: Card is too long, comment will be truncated. [astropy.io.fits.card]\n"
+     ]
+    }
+   ],
+   "source": [
+    "hdul.writeto(dfile.replace('.fits', '_upd.fits'))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "6ef71e3e",
+   "metadata": {},
+   "source": [
+    "# Loop me"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 27,
+   "id": "bf108893",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "['/scratch/REDUX/Keck/LRIS/new_LRISr/Raw/r211004_00006.fits',\n",
+       " '/scratch/REDUX/Keck/LRIS/new_LRISr/Raw/r211004_00003.fits',\n",
+       " '/scratch/REDUX/Keck/LRIS/new_LRISr/Raw/r211004_00008.fits',\n",
+       " '/scratch/REDUX/Keck/LRIS/new_LRISr/Raw/r211004_00005.fits',\n",
+       " '/scratch/REDUX/Keck/LRIS/new_LRISr/Raw/r211004_00004.fits',\n",
+       " '/scratch/REDUX/Keck/LRIS/new_LRISr/Raw/r211004_00007.fits',\n",
+       " '/scratch/REDUX/Keck/LRIS/new_LRISr/Raw/r211004_00009.fits']"
+      ]
+     },
+     "execution_count": 27,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "rfiles = glob.glob(rpath+'/*.fits')\n",
+    "rfiles"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 29,
+   "id": "46c56928",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "for rfile in rfiles:\n",
+    "    hdul = fits.open(rfile)\n",
+    "    head0 = hdul[0].header\n",
+    "    for card, value in hdu_pix[0].header.items():\n",
+    "        head0[card] = value\n",
+    "    # Write\n",
+    "    hdul.writeto(rfile.replace('.fits', '_upd.fits'))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "40bc108d",
+   "metadata": {},
+   "source": [
+    "## Moved them to their own folder.."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "dd49fae5",
+   "metadata": {},
+   "source": [
+    "----"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "19b648a5",
+   "metadata": {},
+   "source": [
+    "# Reudcin"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "81b523ce",
+   "metadata": {},
+   "source": [
+    "## Test\n",
+    "\n",
+    "## pypeit_view_fits keck_lris_red_mark4 r211004_00003_upd.fits\n",
+    "\n",
+    "### Looks good!"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "73acc961",
+   "metadata": {},
+   "source": [
+    "## pypeit_view_fits keck_lris_red_mark4 r211004_00003_upd.fits --proc"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "1a2381d4",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "## Setup\n",
+    "\n",
+    "## "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "2c8c6d18",
+   "metadata": {},
+   "source": [
+    "----"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "2044a723",
+   "metadata": {},
+   "source": [
+    "# Extract me"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "id": "e5c75fd0",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "final_img = np.zeros((2064*2, 2057*2))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "d6963f8b",
+   "metadata": {},
+   "source": [
+    "## Amp L1, aka AMPID3, aka readout sequence 2"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "id": "b60abf5b",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[[4247, 2185], [7, 2064]]"
+      ]
+     },
+     "execution_count": 18,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "parse.load_sections(head0['DSEC3'], fmt_iraf=True)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 43,
+   "id": "55a57ecd",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(slice(7, 2064, None), slice(4247, 2183, -1))"
+      ]
+     },
+     "execution_count": 43,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "slice3 = parse.sec2slice(head0['DSEC3'], one_indexed=True, include_end=True)\n",
+    "slice3"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 44,
+   "id": "dc1d27d4",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(slice(4247, 2183, -1), slice(7, 2064, None))"
+      ]
+     },
+     "execution_count": 44,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "slice3b = (slice3[1], slice3[0])\n",
+    "slice3b"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 45,
+   "id": "b900b10e",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(2064, 2057)"
+      ]
+     },
+     "execution_count": 45,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "amp_l1 = raw_data[slice3b]\n",
+    "amp_l1.shape"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 51,
+   "id": "854d352a",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(<ginga.util.grc.RemoteClient at 0x7f23ab92ef10>,\n",
+       " <ginga.util.grc._channel_proxy at 0x7f23ab92e9d0>)"
+      ]
+     },
+     "execution_count": 51,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "display.show_image(amp_l1)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "dcf11314",
+   "metadata": {},
+   "source": [
+    "## Amp L2"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 47,
+   "id": "6100a075",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(slice(4226, 2169, -1), slice(0, 2064, None))"
+      ]
+     },
+     "execution_count": 47,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "slice2 = parse.sec2slice(head0['DSEC2'], one_indexed=True, include_end=True)\n",
+    "slice2"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 48,
+   "id": "162cf985",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "slice2b = (slice2[1], slice2[0])"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 49,
+   "id": "d46d0710",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(2064, 2057)"
+      ]
+     },
+     "execution_count": 49,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "amp_l2 = raw_data[slice2b]\n",
+    "amp_l2.shape"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 50,
+   "id": "43758335",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(<ginga.util.grc.RemoteClient at 0x7f23ab92ed30>,\n",
+       " <ginga.util.grc._channel_proxy at 0x7f23ab92e160>)"
+      ]
+     },
+     "execution_count": 50,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "display.show_image(amp_l2)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "5b7cd968",
+   "metadata": {},
+   "source": [
+    "----"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "ab81d254",
+   "metadata": {},
+   "source": [
+    "# Checking the gain"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "fc9a6ffa",
+   "metadata": {},
+   "source": [
+    "## The following was for an original set of gain values.\n",
+    "\n",
+    "## Use chk_lris_mark4_gain.py in the DevSuite repo (dev_algorithms/lris) for further analysis"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "d8de2231",
+   "metadata": {},
+   "source": [
+    "## Load a 4 amp flat"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "013f88b6",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "rdx_path = '/scratch/REDUX/Keck/LRIS/new_LRISr/keck_lris_red_mark4_A'"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "id": "a65f65af",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "master_file = os.path.join(rdx_path, 'Masters', 'MasterFlat_A_1_01.fits')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "id": "edfcd3ca",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "\u001b[1;32m[INFO]    ::\u001b[0m \u001b[1;34mdatamodel.py 1480 from_file()\u001b[0m - Loading FlatImages from /scratch/REDUX/Keck/LRIS/new_LRISr/keck_lris_red_mark4_A/Masters/MasterFlat_A_1_01.fits\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Load\n",
+    "flatImages = flatfield.FlatImages.from_file(master_file)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "id": "04b3583d",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(4128, 4114)"
+      ]
+     },
+     "execution_count": 12,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "flatImages.pixelflat_raw.shape"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "83646560",
+   "metadata": {},
+   "source": [
+    "## Spectral cut"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "id": "bda1b2e3",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "2057"
+      ]
+     },
+     "execution_count": 14,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "spat_mid = flatImages.pixelflat_raw.shape[1]//2\n",
+    "spat_mid"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 16,
+   "id": "234a5fc6",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "4128"
+      ]
+     },
+     "execution_count": 16,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "left_spec = np.median(flatImages.pixelflat_raw[:,spat_mid-3:spat_mid], axis=1)\n",
+    "left_spec.size"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "id": "6eed74a1",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "right_spec = np.median(flatImages.pixelflat_raw[:,spat_mid:spat_mid+3], axis=1)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "96c5eab7",
+   "metadata": {},
+   "source": [
+    "### Plot"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 24,
+   "id": "fdad943b",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "image/png": 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\n",
+      "text/plain": [
+       "<Figure size 432x288 with 1 Axes>"
+      ]
+     },
+     "metadata": {
+      "needs_background": "light"
+     },
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "plt.clf()\n",
+    "ax = plt.gca()\n",
+    "ax.plot(left_spec, label='left')\n",
+    "ax.plot(left_spec, label='right')\n",
+    "ax.legend()\n",
+    "ax.set_xlabel('spec')\n",
+    "plt.show()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "id": "1c982067",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "rtio_spec = left_spec/right_spec"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 34,
+   "id": "84d324cd",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "image/png": 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\n",
+      "text/plain": [
+       "<Figure size 432x288 with 1 Axes>"
+      ]
+     },
+     "metadata": {
+      "needs_background": "light"
+     },
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "plt.clf()\n",
+    "ax = plt.gca()\n",
+    "ax.plot(rtio_spec, label='ratio', color='k')\n",
+    "#ax.plot(left_spec, label='right')\n",
+    "ax.set_xlabel('spec')\n",
+    "ax.legend()\n",
+    "plt.savefig('ratio_spec.png', dpi=300)\n",
+    "plt.show()"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "f98607d6",
+   "metadata": {},
+   "source": [
+    "## Spatial cuts"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 25,
+   "id": "eb5b44c9",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "2064"
+      ]
+     },
+     "execution_count": 25,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "spec_mid = flatImages.pixelflat_raw.shape[0]//2\n",
+    "spec_mid"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 26,
+   "id": "f8836780",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "bot_spat = np.median(flatImages.pixelflat_raw[spec_mid-3:spec_mid, :], axis=0)\n",
+    "top_spat = np.median(flatImages.pixelflat_raw[spec_mid:spec_mid+3, :], axis=0)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 27,
+   "id": "716d7338",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "rtio_spat = top_spat/bot_spat"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 35,
+   "id": "490efde6",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "image/png": 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\n",
+      "text/plain": [
+       "<Figure size 432x288 with 1 Axes>"
+      ]
+     },
+     "metadata": {
+      "needs_background": "light"
+     },
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "plt.clf()\n",
+    "ax = plt.gca()\n",
+    "ax.plot(rtio_spat, label='ratio', color='r')\n",
+    "#ax.plot(left_spec, label='right')\n",
+    "ax.set_xlabel('spat')\n",
+    "ax.set_xlim(1400, 2600)\n",
+    "ax.set_ylim(0.9, 1.1)\n",
+    "ax.legend()\n",
+    "plt.savefig('ratio_spat.png', dpi=300)\n",
+    "\n",
+    "plt.show()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "084c35bd",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.5"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
diff --git a/pypeit/core/wavecal/autoid.py b/pypeit/core/wavecal/autoid.py
index 1ab05c0ca6..c07b60289e 100644
--- a/pypeit/core/wavecal/autoid.py
+++ b/pypeit/core/wavecal/autoid.py
@@ -938,17 +938,27 @@ def full_template(spec, lamps, par, ok_mask, det, binspectral, nsnippet=2,
         pspec = np.zeros_like(temp_spec)
         nspec = len(ispec)
         npad = ncomb - nspec
-        pspec[npad // 2:npad // 2 + len(ispec)] = ispec_cont_sub
+        if npad > 0:    # Pad the input spectrum
+            pspec[npad // 2:npad // 2 + len(ispec)] = ispec_cont_sub
+            tspec = tspec_cont_sub
+        elif npad < 0:  # Pad the template!
+            pspec = ispec_cont_sub
+            npad *= -1
+            tspec = np.zeros(nspec)
+            tspec[npad // 2:npad // 2 + ncomb] = tspec_cont_sub
+        else:  # No padding necessary
+            pspec = ispec_cont_sub
+            tspec = tspec_cont_sub
         # Cross-correlate
-        shift_cc, corr_cc = wvutils.xcorr_shift(tspec_cont_sub, pspec, debug=debug, fwhm=par['fwhm'], percent_ceil=x_percentile)
+        shift_cc, corr_cc = wvutils.xcorr_shift(tspec, pspec, debug=debug, fwhm=par['fwhm'], percent_ceil=x_percentile)
         #shift_cc, corr_cc = wvutils.xcorr_shift(temp_spec, pspec, debug=debug, percent_ceil=x_percentile)
         msgs.info("Shift = {}; cc = {}".format(shift_cc, corr_cc))
         if debug:
-            xvals = np.arange(ncomb)
+            xvals = np.arange(tspec.size)
             plt.clf()
             ax = plt.gca()
             #
-            ax.plot(xvals, temp_spec, label='template')  # Template
+            ax.plot(xvals, tspec, label='template')  # Template
             ax.plot(xvals, np.roll(pspec, int(shift_cc)), 'k', label='input')  # Input
             ax.legend()
             plt.show()
diff --git a/pypeit/core/wavecal/spectrographs/templ_keck_lris.py b/pypeit/core/wavecal/spectrographs/templ_keck_lris.py
new file mode 100644
index 0000000000..87a69530ba
--- /dev/null
+++ b/pypeit/core/wavecal/spectrographs/templ_keck_lris.py
@@ -0,0 +1,36 @@
+""" Generate the wavelength templates for Keck/LRIS"""
+import os
+
+from pypeit.core.wavecal import templates
+
+
+# Keck/DEIMOS
+
+def keck_lris_red_mark4_R400(overwrite=False):
+    binspec = 1
+    outroot = 'keck_lris_red_mark4_R400.fits'
+    # PypeIt fits
+    wpath = os.path.join(templates.template_path, 'Keck_LRIS', 'Mark4', 'R400')
+
+    basefiles = ['MasterWaveCalib_A_1_01_long.fits', 
+                 'MasterWaveCalib_A_1_01_sunil.fits'] 
+    wfiles = [os.path.join(wpath, basefile) for basefile in basefiles]
+    # Snippets
+    ifiles = [0,1]
+    slits = [2048, 2045]
+    wv_cuts = [9320.]
+    assert len(wv_cuts) == len(slits)-1
+    # det_dict
+    det_cut = None
+    #
+    templates.build_template(wfiles, slits, wv_cuts, binspec, outroot,
+                             ifiles=ifiles, det_cut=det_cut, chk=True,
+                             normalize=True, lowredux=False,
+                             subtract_conti=True, overwrite=overwrite,
+                             shift_wave=True)
+
+
+
+# Run em
+if __name__ == '__main__':
+    keck_lris_red_mark4_R400()#overwrite=True)
diff --git a/pypeit/data/arc_lines/reid_arxiv/keck_lris_red_mark4_R400.fits b/pypeit/data/arc_lines/reid_arxiv/keck_lris_red_mark4_R400.fits
new file mode 100644
index 0000000000..b8cede8938
Binary files /dev/null and b/pypeit/data/arc_lines/reid_arxiv/keck_lris_red_mark4_R400.fits differ
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/dict_for_ampmode.json b/pypeit/data/spectrographs/keck_lris_red_mark4/dict_for_ampmode.json
new file mode 100644
index 0000000000..69ed630008
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/dict_for_ampmode.json
@@ -0,0 +1,12 @@
+{
+    "HLEFT,VDOWN": "L1",
+    "HLEFT,VSPLIT": "L2L1",
+    "HLEFT,VUP": "L2",
+    "HRIGHT,VDOWN": "U1",
+    "HRIGHT,VSPLIT": "U2U1",
+    "HRIGHT,VUP": "U2",
+    "HSPLIT,VDOWN": "L1U1",
+    "HSPLIT,VSPLIT": "L2U2L1U1",
+    "ALL": "L2U2L1U1",
+    "HSPLIT,VUP": "L2U2"
+}
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_1_1.fits
new file mode 100644
index 0000000000..72aa61b671
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2057 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2057 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:2117,4188:1:-1]' / [FITSpix] ampId0 total section                 DSEC0   = '[8:2064,61:4188]'   / [FITSpix] ampId0 DATASEC                       BSEC0   = '[2065:2117,4188:61:-1]' / [FITSpix] ampId0 BIASSEC                   CSEC0   = '[1:2057,1:4128:-1]' / [CCDpix] ampId0 CCDSEC                         ASEC0   = '[1:2057,4128:1:-1]' / [CCDpix] ampId0 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId0' / TAPLINE0 chanId1                 CRPIX1A =                  0.5 / ampId0 axis1 WCSA reference pixel              CRPIX2A =               4188.5 / ampId0 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId0 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId0 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId0 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId0 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId0 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -1. / ampId0 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId0 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId0 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId0 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId0 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId0 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId0 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId0' / TAPLINE0 chanId1                      CRPIX1B =                  0.5 / ampId0 axis1 WCSB reference pixel              CRPIX2B =               4188.5 / ampId0 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId0 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId0 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId0 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId0 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId0 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId0 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId0 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId0 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId0 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId0 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId0 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId0 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[4234:2118:-1,4188:1:-1]' / [FITSpix] ampId2 total section           DSEC2   = '[2171:4227,61:4188]' / [FITSpix] ampId2 DATASEC                      BSEC2   = '[2170:2118:-1,4188:61:-1]' / [FITSpix] ampId2 BIASSEC                CSEC2   = '[2058:4114:-1,1:4128:-1]' / [CCDpix] ampId2 CCDSEC                   ASEC2   = '[2057:1:-1,4128:1:-1]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEC= 'Amplifier coordinates for ampId2' / TAPLINE1 chanId3                 CRPIX1C =               4234.5 / ampId2 axis1 WCSC reference pixel              CRPIX2C =               4188.5 / ampId2 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId2 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId2 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -1. / ampId2 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId2 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId2 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -1. / ampId2 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId2 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId2 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId2 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId2 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId2 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId2 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId2' / TAPLINE1 chanId3                      CRPIX1D =               4234.5 / ampId2 axis1 WCSD reference pixel              CRPIX2D =               4188.5 / ampId2 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId2 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId2 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId2 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId2 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId2 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId2 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId2 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId2 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId2 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId2 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId2 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId2 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_1_2.fits
new file mode 100644
index 0000000000..bda732079a
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2057 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2057 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:2117,2124:1:-1]' / [FITSpix] ampId0 total section                 DSEC0   = '[8:2064,61:2124]'   / [FITSpix] ampId0 DATASEC                       BSEC0   = '[2065:2117,2124:61:-1]' / [FITSpix] ampId0 BIASSEC                   CSEC0   = '[1:2057,1:4128:-2]' / [CCDpix] ampId0 CCDSEC                         ASEC0   = '[1:2057,4128:1:-2]' / [CCDpix] ampId0 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId0' / TAPLINE0 chanId1                 CRPIX1A =                  0.5 / ampId0 axis1 WCSA reference pixel              CRPIX2A =               2124.5 / ampId0 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId0 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId0 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId0 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId0 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId0 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -2. / ampId0 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId0 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId0 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId0 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId0 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId0 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId0 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId0' / TAPLINE0 chanId1                      CRPIX1B =                  0.5 / ampId0 axis1 WCSB reference pixel              CRPIX2B =               2124.5 / ampId0 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId0 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId0 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId0 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId0 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId0 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId0 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId0 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId0 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId0 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId0 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId0 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId0 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[4234:2118:-1,2124:1:-1]' / [FITSpix] ampId2 total section           DSEC2   = '[2171:4227,61:2124]' / [FITSpix] ampId2 DATASEC                      BSEC2   = '[2170:2118:-1,2124:61:-1]' / [FITSpix] ampId2 BIASSEC                CSEC2   = '[2058:4114:-1,1:4128:-2]' / [CCDpix] ampId2 CCDSEC                   ASEC2   = '[2057:1:-1,4128:1:-2]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEC= 'Amplifier coordinates for ampId2' / TAPLINE1 chanId3                 CRPIX1C =               4234.5 / ampId2 axis1 WCSC reference pixel              CRPIX2C =               2124.5 / ampId2 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId2 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId2 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -1. / ampId2 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId2 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId2 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -2. / ampId2 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId2 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId2 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId2 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId2 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId2 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId2 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId2' / TAPLINE1 chanId3                      CRPIX1D =               4234.5 / ampId2 axis1 WCSD reference pixel              CRPIX2D =               2124.5 / ampId2 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId2 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId2 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId2 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId2 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId2 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId2 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId2 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId2 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId2 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId2 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId2 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId2 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_2_1.fits
new file mode 100644
index 0000000000..7ef41cdd1a
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 1104 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2056 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  144 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 1028 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   72 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:1104,4188:1:-1]' / [FITSpix] ampId0 total section                 DSEC0   = '[5:1032,61:4188]'   / [FITSpix] ampId0 DATASEC                       BSEC0   = '[1033:1104,4188:61:-1]' / [FITSpix] ampId0 BIASSEC                   CSEC0   = '[2:2057:2,1:4128:-1]' / [CCDpix] ampId0 CCDSEC                       ASEC0   = '[2:2057:2,4128:1:-1]' / [CCDpix] ampId0 AMPSEC                       WCSNAMEA= 'Amplifier coordinates for ampId0' / TAPLINE0 chanId1                 CRPIX1A =                  0.5 / ampId0 axis1 WCSA reference pixel              CRPIX2A =               4188.5 / ampId0 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId0 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId0 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId0 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId0 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId0 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -1. / ampId0 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId0 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId0 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId0 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId0 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId0 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId0 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId0' / TAPLINE0 chanId1                      CRPIX1B =                  0.5 / ampId0 axis1 WCSB reference pixel              CRPIX2B =               4188.5 / ampId0 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId0 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId0 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId0 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId0 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId0 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId0 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId0 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId0 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId0 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId0 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId0 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId0 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[2208:1105:-1,4188:1:-1]' / [FITSpix] ampId2 total section           DSEC2   = '[1177:2204,61:4188]' / [FITSpix] ampId2 DATASEC                      BSEC2   = '[1176:1105:-1,4188:61:-1]' / [FITSpix] ampId2 BIASSEC                CSEC2   = '[2058:4113:-2,1:4128:-1]' / [CCDpix] ampId2 CCDSEC                   ASEC2   = '[2057:2:-2,4128:1:-1]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEC= 'Amplifier coordinates for ampId2' / TAPLINE1 chanId3                 CRPIX1C =               2208.5 / ampId2 axis1 WCSC reference pixel              CRPIX2C =               4188.5 / ampId2 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId2 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId2 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -2. / ampId2 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId2 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId2 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -1. / ampId2 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId2 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId2 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId2 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId2 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId2 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId2 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId2' / TAPLINE1 chanId3                      CRPIX1D =               2208.5 / ampId2 axis1 WCSD reference pixel              CRPIX2D =               4188.5 / ampId2 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId2 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId2 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId2 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId2 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId2 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId2 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId2 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId2 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId2 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId2 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId2 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId2 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 1104 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_2_2.fits
new file mode 100644
index 0000000000..04356488b1
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1U1_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 1104 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2056 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  144 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 1028 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   72 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:1104,2124:1:-1]' / [FITSpix] ampId0 total section                 DSEC0   = '[5:1032,61:2124]'   / [FITSpix] ampId0 DATASEC                       BSEC0   = '[1033:1104,2124:61:-1]' / [FITSpix] ampId0 BIASSEC                   CSEC0   = '[2:2057:2,1:4128:-2]' / [CCDpix] ampId0 CCDSEC                       ASEC0   = '[2:2057:2,4128:1:-2]' / [CCDpix] ampId0 AMPSEC                       WCSNAMEA= 'Amplifier coordinates for ampId0' / TAPLINE0 chanId1                 CRPIX1A =                  0.5 / ampId0 axis1 WCSA reference pixel              CRPIX2A =               2124.5 / ampId0 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId0 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId0 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId0 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId0 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId0 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -2. / ampId0 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId0 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId0 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId0 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId0 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId0 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId0 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId0' / TAPLINE0 chanId1                      CRPIX1B =                  0.5 / ampId0 axis1 WCSB reference pixel              CRPIX2B =               2124.5 / ampId0 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId0 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId0 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId0 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId0 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId0 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId0 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId0 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId0 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId0 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId0 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId0 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId0 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[2208:1105:-1,2124:1:-1]' / [FITSpix] ampId2 total section           DSEC2   = '[1177:2204,61:2124]' / [FITSpix] ampId2 DATASEC                      BSEC2   = '[1176:1105:-1,2124:61:-1]' / [FITSpix] ampId2 BIASSEC                CSEC2   = '[2058:4113:-2,1:4128:-2]' / [CCDpix] ampId2 CCDSEC                   ASEC2   = '[2057:2:-2,4128:1:-2]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEC= 'Amplifier coordinates for ampId2' / TAPLINE1 chanId3                 CRPIX1C =               2208.5 / ampId2 axis1 WCSC reference pixel              CRPIX2C =               2124.5 / ampId2 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId2 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId2 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -2. / ampId2 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId2 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId2 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -2. / ampId2 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId2 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId2 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId2 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId2 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId2 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId2 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId2' / TAPLINE1 chanId3                      CRPIX1D =               2208.5 / ampId2 axis1 WCSD reference pixel              CRPIX2D =               2124.5 / ampId2 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId2 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId2 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId2 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId2 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId2 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId2 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId2 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId2 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId2 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId2 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId2 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId2 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 1104 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_1_1.fits
new file mode 100644
index 0000000000..bcad8310eb
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:4174,4188:1:-1]' / [FITSpix] ampId0 total section                 DSEC0   = '[8:4121,61:4188]'   / [FITSpix] ampId0 DATASEC                       BSEC0   = '[4122:4174,4188:61:-1]' / [FITSpix] ampId0 BIASSEC                   CSEC0   = '[1:4114,1:4128:-1]' / [CCDpix] ampId0 CCDSEC                         ASEC0   = '[1:4114,4128:1:-1]' / [CCDpix] ampId0 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId0' / TAPLINE0 chanId1                 CRPIX1A =                  0.5 / ampId0 axis1 WCSA reference pixel              CRPIX2A =               4188.5 / ampId0 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId0 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId0 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId0 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId0 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId0 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -1. / ampId0 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId0 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId0 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId0 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId0 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId0 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId0 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId0' / TAPLINE0 chanId1                      CRPIX1B =                  0.5 / ampId0 axis1 WCSB reference pixel              CRPIX2B =               4188.5 / ampId0 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId0 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId0 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId0 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId0 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId0 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId0 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId0 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId0 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId0 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId0 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId0 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId0 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_1_2.fits
new file mode 100644
index 0000000000..964b3bae69
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:4174,2124:1:-1]' / [FITSpix] ampId0 total section                 DSEC0   = '[8:4121,61:2124]'   / [FITSpix] ampId0 DATASEC                       BSEC0   = '[4122:4174,2124:61:-1]' / [FITSpix] ampId0 BIASSEC                   CSEC0   = '[1:4114,1:4128:-2]' / [CCDpix] ampId0 CCDSEC                         ASEC0   = '[1:4114,4128:1:-2]' / [CCDpix] ampId0 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId0' / TAPLINE0 chanId1                 CRPIX1A =                  0.5 / ampId0 axis1 WCSA reference pixel              CRPIX2A =               2124.5 / ampId0 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId0 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId0 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId0 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId0 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId0 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -2. / ampId0 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId0 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId0 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId0 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId0 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId0 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId0 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId0' / TAPLINE0 chanId1                      CRPIX1B =                  0.5 / ampId0 axis1 WCSB reference pixel              CRPIX2B =               2124.5 / ampId0 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId0 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId0 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId0 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId0 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId0 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId0 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId0 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId0 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId0 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId0 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId0 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId0 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_2_1.fits
new file mode 100644
index 0000000000..0815938408
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:2117,4188:1:-1]' / [FITSpix] ampId0 total section                 DSEC0   = '[5:2060,61:4188]'   / [FITSpix] ampId0 DATASEC                       BSEC0   = '[2062:2117,4188:61:-1]' / [FITSpix] ampId0 BIASSEC                   CSEC0   = '[2:4113:2,1:4128:-1]' / [CCDpix] ampId0 CCDSEC                       ASEC0   = '[2:4113:2,4128:1:-1]' / [CCDpix] ampId0 AMPSEC                       WCSNAMEA= 'Amplifier coordinates for ampId0' / TAPLINE0 chanId1                 CRPIX1A =                  0.5 / ampId0 axis1 WCSA reference pixel              CRPIX2A =               4188.5 / ampId0 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId0 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId0 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId0 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId0 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId0 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -1. / ampId0 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId0 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId0 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId0 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId0 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId0 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId0 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId0' / TAPLINE0 chanId1                      CRPIX1B =                  0.5 / ampId0 axis1 WCSB reference pixel              CRPIX2B =               4188.5 / ampId0 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId0 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId0 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId0 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId0 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId0 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId0 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId0 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId0 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId0 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId0 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId0 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId0 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_2_2.fits
new file mode 100644
index 0000000000..83314c05c5
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL1_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:2117,2124:1:-1]' / [FITSpix] ampId0 total section                 DSEC0   = '[5:2060,61:2124]'   / [FITSpix] ampId0 DATASEC                       BSEC0   = '[2062:2117,2124:61:-1]' / [FITSpix] ampId0 BIASSEC                   CSEC0   = '[2:4113:2,1:4128:-2]' / [CCDpix] ampId0 CCDSEC                       ASEC0   = '[2:4113:2,4128:1:-2]' / [CCDpix] ampId0 AMPSEC                       WCSNAMEA= 'Amplifier coordinates for ampId0' / TAPLINE0 chanId1                 CRPIX1A =                  0.5 / ampId0 axis1 WCSA reference pixel              CRPIX2A =               2124.5 / ampId0 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId0 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId0 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId0 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId0 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId0 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -2. / ampId0 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId0 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId0 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId0 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId0 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId0 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId0 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId0' / TAPLINE0 chanId1                      CRPIX1B =                  0.5 / ampId0 axis1 WCSB reference pixel              CRPIX2B =               2124.5 / ampId0 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId0 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId0 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId0 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId0 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId0 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId0 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId0 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId0 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId0 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId0 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId0 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId0 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_1_1.fits
new file mode 100644
index 0000000000..d197be8f7b
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:4174,1:2124]'    / [FITSpix] ampId1 total section                 DSEC1   = '[8:4121,1:2064]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[4122:4174,1:2064]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[1:4114,1:2064]'    / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[1:4114,1:2064]'    / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:4174,4248:2125:-1]' / [FITSpix] ampId0 total section              DSEC0   = '[8:4121,2185:4248]' / [FITSpix] ampId0 DATASEC                       BSEC0   = '[4122:4174,4248:2185:-1]' / [FITSpix] ampId0 BIASSEC                 CSEC0   = '[1:4114,2065:4128:-1]' / [CCDpix] ampId0 CCDSEC                      ASEC0   = '[1:4114,2064:1:-1]' / [CCDpix] ampId0 AMPSEC                         WCSNAMEC= 'Amplifier coordinates for ampId0' / TAPLINE1 chanId1                 CRPIX1C =                  0.5 / ampId0 axis1 WCSC reference pixel              CRPIX2C =               4248.5 / ampId0 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId0 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId0 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                   1. / ampId0 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId0 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId0 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -1. / ampId0 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId0 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId0 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId0 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId0 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId0 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId0 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId0' / TAPLINE1 chanId1                      CRPIX1D =                  0.5 / ampId0 axis1 WCSD reference pixel              CRPIX2D =               4248.5 / ampId0 axis2 WCSD reference pixel              CRVAL1D =                  -7. / ampId0 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId0 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId0 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId0 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId0 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId0 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId0 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId0 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId0 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId0 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId0 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId0 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_1_2.fits
new file mode 100644
index 0000000000..120674d730
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 1092 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 1032 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:4174,1:1092]'    / [FITSpix] ampId1 total section                 DSEC1   = '[8:4121,1:1032]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[4122:4174,1:1032]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[1:4114,1:2064:2]'  / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[1:4114,1:2064:2]'  / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:4174,2184:1093:-1]' / [FITSpix] ampId0 total section              DSEC0   = '[8:4121,1153:2184]' / [FITSpix] ampId0 DATASEC                       BSEC0   = '[4122:4174,2184:1153:-1]' / [FITSpix] ampId0 BIASSEC                 CSEC0   = '[1:4114,2065:4128:-2]' / [CCDpix] ampId0 CCDSEC                      ASEC0   = '[1:4114,2064:1:-2]' / [CCDpix] ampId0 AMPSEC                         WCSNAMEC= 'Amplifier coordinates for ampId0' / TAPLINE1 chanId1                 CRPIX1C =                  0.5 / ampId0 axis1 WCSC reference pixel              CRPIX2C =               2184.5 / ampId0 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId0 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId0 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                   1. / ampId0 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId0 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId0 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -2. / ampId0 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId0 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId0 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId0 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId0 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId0 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId0 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId0' / TAPLINE1 chanId1                      CRPIX1D =                  0.5 / ampId0 axis1 WCSD reference pixel              CRPIX2D =               2184.5 / ampId0 axis2 WCSD reference pixel              CRVAL1D =                  -7. / ampId0 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId0 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId0 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId0 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId0 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId0 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId0 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId0 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId0 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId0 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId0 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId0 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 1092 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_2_1.fits
new file mode 100644
index 0000000000..945af06301
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:2117,1:2124]'    / [FITSpix] ampId1 total section                 DSEC1   = '[5:2060,1:2064]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[2062:2117,1:2064]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[2:4113:2,1:2064]'  / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[2:4113:2,1:2064]'  / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:2117,4248:2125:-1]' / [FITSpix] ampId0 total section              DSEC0   = '[5:2060,2185:4248]' / [FITSpix] ampId0 DATASEC                       BSEC0   = '[2062:2117,4248:2185:-1]' / [FITSpix] ampId0 BIASSEC                 CSEC0   = '[2:4113:2,2065:4128:-1]' / [CCDpix] ampId0 CCDSEC                    ASEC0   = '[2:4113:2,2064:1:-1]' / [CCDpix] ampId0 AMPSEC                       WCSNAMEC= 'Amplifier coordinates for ampId0' / TAPLINE1 chanId1                 CRPIX1C =                  0.5 / ampId0 axis1 WCSC reference pixel              CRPIX2C =               4248.5 / ampId0 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId0 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId0 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                   2. / ampId0 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId0 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId0 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -1. / ampId0 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId0 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId0 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId0 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId0 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId0 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId0 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId0' / TAPLINE1 chanId1                      CRPIX1D =                  0.5 / ampId0 axis1 WCSD reference pixel              CRPIX2D =               4248.5 / ampId0 axis2 WCSD reference pixel              CRVAL1D =                  -7. / ampId0 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId0 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId0 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId0 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId0 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId0 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId0 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId0 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId0 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId0 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId0 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId0 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_2_2.fits
new file mode 100644
index 0000000000..cc2fbb7297
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2L1_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 1092 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 1032 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:2117,1:1092]'    / [FITSpix] ampId1 total section                 DSEC1   = '[5:2060,1:1032]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[2062:2117,1:1032]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[2:4113:2,1:2064:2]' / [CCDpix] ampId1 CCDSEC                        ASEC1   = '[2:4113:2,1:2064:2]' / [CCDpix] ampId1 AMPSEC                        WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:2117,2184:1093:-1]' / [FITSpix] ampId0 total section              DSEC0   = '[5:2060,1153:2184]' / [FITSpix] ampId0 DATASEC                       BSEC0   = '[2062:2117,2184:1153:-1]' / [FITSpix] ampId0 BIASSEC                 CSEC0   = '[2:4113:2,2065:4128:-2]' / [CCDpix] ampId0 CCDSEC                    ASEC0   = '[2:4113:2,2064:1:-2]' / [CCDpix] ampId0 AMPSEC                       WCSNAMEC= 'Amplifier coordinates for ampId0' / TAPLINE1 chanId1                 CRPIX1C =                  0.5 / ampId0 axis1 WCSC reference pixel              CRPIX2C =               2184.5 / ampId0 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId0 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId0 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                   2. / ampId0 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId0 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId0 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -2. / ampId0 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId0 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId0 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId0 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId0 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId0 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId0 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId0' / TAPLINE1 chanId1                      CRPIX1D =                  0.5 / ampId0 axis1 WCSD reference pixel              CRPIX2D =               2184.5 / ampId0 axis2 WCSD reference pixel              CRVAL1D =                  -7. / ampId0 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId0 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId0 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId0 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId0 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId0 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId0 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId0 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId0 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId0 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId0 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId0 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 1092 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_1_1.fits
new file mode 100644
index 0000000000..db6979ce21
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2057 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2057 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:2117,1:2124]'    / [FITSpix] ampId1 total section                 DSEC1   = '[8:2064,1:2064]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[2065:2117,1:2064]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[1:2057,1:2064]'    / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[1:2057,1:2064]'    / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[4234:2118:-1,1:2124]' / [FITSpix] ampId3 total section              DSEC3   = '[2171:4227,1:2064]' / [FITSpix] ampId3 DATASEC                       BSEC3   = '[2170:2118:-1,1:2064]' / [FITSpix] ampId3 BIASSEC                    CSEC3   = '[2058:4114:-1,1:2064]' / [CCDpix] ampId3 CCDSEC                      ASEC3   = '[2057:1:-1,1:2064]' / [CCDpix] ampId3 AMPSEC                         WCSNAMEC= 'Amplifier coordinates for ampId3' / TAPLINE1 chanId4                 CRPIX1C =               4234.5 / ampId3 axis1 WCSC reference pixel              CRPIX2C =                  0.5 / ampId3 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId3 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId3 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -1. / ampId3 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId3 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId3 WCSC CTM2_1 from pix to iWC             CD2_2C  =                   1. / ampId3 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId3 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId3 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId3 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId3 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId3 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId3 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId3' / TAPLINE1 chanId4                      CRPIX1D =               4234.5 / ampId3 axis1 WCSD reference pixel              CRPIX2D =                  0.5 / ampId3 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId3 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                   0. / ampId3 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId3 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId3 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId3 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId3 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId3 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId3 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId3 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId3 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId3 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId3 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:2117,4248:2125:-1]' / [FITSpix] ampId0 total section              DSEC0   = '[8:2064,2185:4248]' / [FITSpix] ampId0 DATASEC                       BSEC0   = '[2065:2117,4248:2185:-1]' / [FITSpix] ampId0 BIASSEC                 CSEC0   = '[1:2057,2065:4128:-1]' / [CCDpix] ampId0 CCDSEC                      ASEC0   = '[1:2057,2064:1:-1]' / [CCDpix] ampId0 AMPSEC                         WCSNAMEE= 'Amplifier coordinates for ampId0' / TAPLINE2 chanId1                 CRPIX1E =                  0.5 / ampId0 axis1 WCSE reference pixel              CRPIX2E =               4248.5 / ampId0 axis2 WCSE reference pixel              CRVAL1E =                  -7. / ampId0 iWaxis1 WCSE coord value @ refpix       CRVAL2E =                   0. / ampId0 iWaxis2 WCSE coord value @ refpix       CD1_1E  =                   1. / ampId0 WCSE CTM1_1 from pix to iWC             CD1_2E  =                   0. / ampId0 WCSE CTM1_2 from pix to iWC             CD2_1E  =                   0. / ampId0 WCSE CTM2_1 from pix to iWC             CD2_2E  =                  -1. / ampId0 WCSE CTM2_2 from pix to iWC             CTYPE1E = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSE coord/proj type        CTYPE2E = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSE coord/proj type        CUNIT1E = 'CCDpix  '           / ampId0 iWaxis1 WCSE physical unit              CUNIT2E = 'CCDpix  '           / ampId0 iWaxis2 WCSE physical unit              CRDER1E =                   0. / ampId0 iWaxis1 WCSE coord random error         CRDER2E =                   0. / ampId0 iWaxis2 WCSE coord random error         CSYER1E =                   0. / ampId0 iWaxis1 WCSE coord systematic error     CSYER2E =                   0. / ampId0 iWaxis2 WCSE coord systematic error     WCSNAMEF= 'Pane coordinates for ampId0' / TAPLINE2 chanId1                      CRPIX1F =                  0.5 / ampId0 axis1 WCSF reference pixel              CRPIX2F =               4248.5 / ampId0 axis2 WCSF reference pixel              CRVAL1F =                  -7. / ampId0 iWaxis1 WCSF coord value @ refpix       CRVAL2F =                4128. / ampId0 iWaxis2 WCSF coord value @ refpix       CD1_1F  =                   1. / ampId0 WCSF CTM1_1 from pix to iWC             CD1_2F  =                   0. / ampId0 WCSF CTM1_2 from pix to iWC             CD2_1F  =                   0. / ampId0 WCSF CTM2_1 from pix to iWC             CD2_2F  =                   1. / ampId0 WCSF CTM2_2 from pix to iWC             CTYPE1F = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSF coord/proj type            CTYPE2F = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSF coord/proj type            CUNIT1F = 'CCDpix  '           / ampId0 iWaxis1 WCSF physical unit              CUNIT2F = 'CCDpix  '           / ampId0 iWaxis2 WCSF physical unit              CRDER1F =                   0. / ampId0 iWaxis1 WCSF coord random error         CRDER2F =                   0. / ampId0 iWaxis2 WCSF coord random error         CSYER1F =                   0. / ampId0 iWaxis1 WCSF coord systematic error     CSYER2F =                   0. / ampId0 iWaxis2 WCSF coord systematic error     TAPLIN2 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[4234:2118:-1,4248:2125:-1]' / [FITSpix] ampId2 total section        DSEC2   = '[2171:4227,2185:4248]' / [FITSpix] ampId2 DATASEC                    BSEC2   = '[2170:2118:-1,4248:2185:-1]' / [FITSpix] ampId2 BIASSEC              CSEC2   = '[2058:4114:-1,2065:4128:-1]' / [CCDpix] ampId2 CCDSEC                ASEC2   = '[2057:1:-1,2064:1:-1]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEG= 'Amplifier coordinates for ampId2' / TAPLINE3 chanId3                 CRPIX1G =               4234.5 / ampId2 axis1 WCSG reference pixel              CRPIX2G =               4248.5 / ampId2 axis2 WCSG reference pixel              CRVAL1G =                  -7. / ampId2 iWaxis1 WCSG coord value @ refpix       CRVAL2G =                   0. / ampId2 iWaxis2 WCSG coord value @ refpix       CD1_1G  =                  -1. / ampId2 WCSG CTM1_1 from pix to iWC             CD1_2G  =                   0. / ampId2 WCSG CTM1_2 from pix to iWC             CD2_1G  =                   0. / ampId2 WCSG CTM2_1 from pix to iWC             CD2_2G  =                  -1. / ampId2 WCSG CTM2_2 from pix to iWC             CTYPE1G = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSG coord/proj type        CTYPE2G = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSG coord/proj type        CUNIT1G = 'CCDpix  '           / ampId2 iWaxis1 WCSG physical unit              CUNIT2G = 'CCDpix  '           / ampId2 iWaxis2 WCSG physical unit              CRDER1G =                   0. / ampId2 iWaxis1 WCSG coord random error         CRDER2G =                   0. / ampId2 iWaxis2 WCSG coord random error         CSYER1G =                   0. / ampId2 iWaxis1 WCSG coord systematic error     CSYER2G =                   0. / ampId2 iWaxis2 WCSG coord systematic error     WCSNAMEH= 'Pane coordinates for ampId2' / TAPLINE3 chanId3                      CRPIX1H =               4234.5 / ampId2 axis1 WCSH reference pixel              CRPIX2H =               4248.5 / ampId2 axis2 WCSH reference pixel              CRVAL1H =                4121. / ampId2 iWaxis1 WCSH coord value @ refpix       CRVAL2H =                4128. / ampId2 iWaxis2 WCSH coord value @ refpix       CD1_1H  =                   1. / ampId2 WCSH CTM1_1 from pix to iWC             CD1_2H  =                   0. / ampId2 WCSH CTM1_2 from pix to iWC             CD2_1H  =                   0. / ampId2 WCSH CTM2_1 from pix to iWC             CD2_2H  =                   1. / ampId2 WCSH CTM2_2 from pix to iWC             CTYPE1H = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSH coord/proj type            CTYPE2H = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSH coord/proj type            CUNIT1H = 'CCDpix  '           / ampId2 iWaxis1 WCSH physical unit              CUNIT2H = 'CCDpix  '           / ampId2 iWaxis2 WCSH physical unit              CRDER1H =                   0. / ampId2 iWaxis1 WCSH coord random error         CRDER2H =                   0. / ampId2 iWaxis2 WCSH coord random error         CSYER1H =                   0. / ampId2 iWaxis1 WCSH coord systematic error     CSYER2H =                   0. / ampId2 iWaxis2 WCSH coord systematic error     TAPLIN3 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    4 / Archon taps for this readout                   END                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_1_2.fits
new file mode 100644
index 0000000000..6e1ddaef38
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2057 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2057 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 1092 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 1032 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:2117,1:1092]'    / [FITSpix] ampId1 total section                 DSEC1   = '[8:2064,1:1032]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[2065:2117,1:1032]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[1:2057,1:2064:2]'  / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[1:2057,1:2064:2]'  / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[4234:2118:-1,1:1092]' / [FITSpix] ampId3 total section              DSEC3   = '[2171:4227,1:1032]' / [FITSpix] ampId3 DATASEC                       BSEC3   = '[2170:2118:-1,1:1032]' / [FITSpix] ampId3 BIASSEC                    CSEC3   = '[2058:4114:-1,1:2064:2]' / [CCDpix] ampId3 CCDSEC                    ASEC3   = '[2057:1:-1,1:2064:2]' / [CCDpix] ampId3 AMPSEC                       WCSNAMEC= 'Amplifier coordinates for ampId3' / TAPLINE1 chanId4                 CRPIX1C =               4234.5 / ampId3 axis1 WCSC reference pixel              CRPIX2C =                  0.5 / ampId3 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId3 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId3 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -1. / ampId3 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId3 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId3 WCSC CTM2_1 from pix to iWC             CD2_2C  =                   2. / ampId3 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId3 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId3 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId3 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId3 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId3 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId3 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId3' / TAPLINE1 chanId4                      CRPIX1D =               4234.5 / ampId3 axis1 WCSD reference pixel              CRPIX2D =                  0.5 / ampId3 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId3 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                   0. / ampId3 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId3 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId3 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId3 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId3 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId3 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId3 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId3 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId3 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId3 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId3 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:2117,2184:1093:-1]' / [FITSpix] ampId0 total section              DSEC0   = '[8:2064,1153:2184]' / [FITSpix] ampId0 DATASEC                       BSEC0   = '[2065:2117,2184:1153:-1]' / [FITSpix] ampId0 BIASSEC                 CSEC0   = '[1:2057,2065:4128:-2]' / [CCDpix] ampId0 CCDSEC                      ASEC0   = '[1:2057,2064:1:-2]' / [CCDpix] ampId0 AMPSEC                         WCSNAMEE= 'Amplifier coordinates for ampId0' / TAPLINE2 chanId1                 CRPIX1E =                  0.5 / ampId0 axis1 WCSE reference pixel              CRPIX2E =               2184.5 / ampId0 axis2 WCSE reference pixel              CRVAL1E =                  -7. / ampId0 iWaxis1 WCSE coord value @ refpix       CRVAL2E =                   0. / ampId0 iWaxis2 WCSE coord value @ refpix       CD1_1E  =                   1. / ampId0 WCSE CTM1_1 from pix to iWC             CD1_2E  =                   0. / ampId0 WCSE CTM1_2 from pix to iWC             CD2_1E  =                   0. / ampId0 WCSE CTM2_1 from pix to iWC             CD2_2E  =                  -2. / ampId0 WCSE CTM2_2 from pix to iWC             CTYPE1E = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSE coord/proj type        CTYPE2E = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSE coord/proj type        CUNIT1E = 'CCDpix  '           / ampId0 iWaxis1 WCSE physical unit              CUNIT2E = 'CCDpix  '           / ampId0 iWaxis2 WCSE physical unit              CRDER1E =                   0. / ampId0 iWaxis1 WCSE coord random error         CRDER2E =                   0. / ampId0 iWaxis2 WCSE coord random error         CSYER1E =                   0. / ampId0 iWaxis1 WCSE coord systematic error     CSYER2E =                   0. / ampId0 iWaxis2 WCSE coord systematic error     WCSNAMEF= 'Pane coordinates for ampId0' / TAPLINE2 chanId1                      CRPIX1F =                  0.5 / ampId0 axis1 WCSF reference pixel              CRPIX2F =               2184.5 / ampId0 axis2 WCSF reference pixel              CRVAL1F =                  -7. / ampId0 iWaxis1 WCSF coord value @ refpix       CRVAL2F =                4128. / ampId0 iWaxis2 WCSF coord value @ refpix       CD1_1F  =                   1. / ampId0 WCSF CTM1_1 from pix to iWC             CD1_2F  =                   0. / ampId0 WCSF CTM1_2 from pix to iWC             CD2_1F  =                   0. / ampId0 WCSF CTM2_1 from pix to iWC             CD2_2F  =                   2. / ampId0 WCSF CTM2_2 from pix to iWC             CTYPE1F = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSF coord/proj type            CTYPE2F = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSF coord/proj type            CUNIT1F = 'CCDpix  '           / ampId0 iWaxis1 WCSF physical unit              CUNIT2F = 'CCDpix  '           / ampId0 iWaxis2 WCSF physical unit              CRDER1F =                   0. / ampId0 iWaxis1 WCSF coord random error         CRDER2F =                   0. / ampId0 iWaxis2 WCSF coord random error         CSYER1F =                   0. / ampId0 iWaxis1 WCSF coord systematic error     CSYER2F =                   0. / ampId0 iWaxis2 WCSF coord systematic error     TAPLIN2 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[4234:2118:-1,2184:1093:-1]' / [FITSpix] ampId2 total section        DSEC2   = '[2171:4227,1153:2184]' / [FITSpix] ampId2 DATASEC                    BSEC2   = '[2170:2118:-1,2184:1153:-1]' / [FITSpix] ampId2 BIASSEC              CSEC2   = '[2058:4114:-1,2065:4128:-2]' / [CCDpix] ampId2 CCDSEC                ASEC2   = '[2057:1:-1,2064:1:-2]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEG= 'Amplifier coordinates for ampId2' / TAPLINE3 chanId3                 CRPIX1G =               4234.5 / ampId2 axis1 WCSG reference pixel              CRPIX2G =               2184.5 / ampId2 axis2 WCSG reference pixel              CRVAL1G =                  -7. / ampId2 iWaxis1 WCSG coord value @ refpix       CRVAL2G =                   0. / ampId2 iWaxis2 WCSG coord value @ refpix       CD1_1G  =                  -1. / ampId2 WCSG CTM1_1 from pix to iWC             CD1_2G  =                   0. / ampId2 WCSG CTM1_2 from pix to iWC             CD2_1G  =                   0. / ampId2 WCSG CTM2_1 from pix to iWC             CD2_2G  =                  -2. / ampId2 WCSG CTM2_2 from pix to iWC             CTYPE1G = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSG coord/proj type        CTYPE2G = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSG coord/proj type        CUNIT1G = 'CCDpix  '           / ampId2 iWaxis1 WCSG physical unit              CUNIT2G = 'CCDpix  '           / ampId2 iWaxis2 WCSG physical unit              CRDER1G =                   0. / ampId2 iWaxis1 WCSG coord random error         CRDER2G =                   0. / ampId2 iWaxis2 WCSG coord random error         CSYER1G =                   0. / ampId2 iWaxis1 WCSG coord systematic error     CSYER2G =                   0. / ampId2 iWaxis2 WCSG coord systematic error     WCSNAMEH= 'Pane coordinates for ampId2' / TAPLINE3 chanId3                      CRPIX1H =               4234.5 / ampId2 axis1 WCSH reference pixel              CRPIX2H =               2184.5 / ampId2 axis2 WCSH reference pixel              CRVAL1H =                4121. / ampId2 iWaxis1 WCSH coord value @ refpix       CRVAL2H =                4128. / ampId2 iWaxis2 WCSH coord value @ refpix       CD1_1H  =                   1. / ampId2 WCSH CTM1_1 from pix to iWC             CD1_2H  =                   0. / ampId2 WCSH CTM1_2 from pix to iWC             CD2_1H  =                   0. / ampId2 WCSH CTM2_1 from pix to iWC             CD2_2H  =                   2. / ampId2 WCSH CTM2_2 from pix to iWC             CTYPE1H = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSH coord/proj type            CTYPE2H = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSH coord/proj type            CUNIT1H = 'CCDpix  '           / ampId2 iWaxis1 WCSH physical unit              CUNIT2H = 'CCDpix  '           / ampId2 iWaxis2 WCSH physical unit              CRDER1H =                   0. / ampId2 iWaxis1 WCSH coord random error         CRDER2H =                   0. / ampId2 iWaxis2 WCSH coord random error         CSYER1H =                   0. / ampId2 iWaxis1 WCSH coord systematic error     CSYER2H =                   0. / ampId2 iWaxis2 WCSH coord systematic error     TAPLIN3 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 1092 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    4 / Archon taps for this readout                   END                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_2_1.fits
new file mode 100644
index 0000000000..2fdde5af35
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 1104 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2056 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  144 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 1028 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   72 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:1104,1:2124]'    / [FITSpix] ampId1 total section                 DSEC1   = '[5:1032,1:2064]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[1033:1104,1:2064]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[2:2057:2,1:2064]'  / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[2:2057:2,1:2064]'  / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[2208:1105:-1,1:2124]' / [FITSpix] ampId3 total section              DSEC3   = '[1177:2204,1:2064]' / [FITSpix] ampId3 DATASEC                       BSEC3   = '[1176:1105:-1,1:2064]' / [FITSpix] ampId3 BIASSEC                    CSEC3   = '[2058:4113:-2,1:2064]' / [CCDpix] ampId3 CCDSEC                      ASEC3   = '[2057:2:-2,1:2064]' / [CCDpix] ampId3 AMPSEC                         WCSNAMEC= 'Amplifier coordinates for ampId3' / TAPLINE1 chanId4                 CRPIX1C =               2208.5 / ampId3 axis1 WCSC reference pixel              CRPIX2C =                  0.5 / ampId3 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId3 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId3 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -2. / ampId3 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId3 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId3 WCSC CTM2_1 from pix to iWC             CD2_2C  =                   1. / ampId3 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId3 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId3 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId3 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId3 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId3 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId3 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId3' / TAPLINE1 chanId4                      CRPIX1D =               2208.5 / ampId3 axis1 WCSD reference pixel              CRPIX2D =                  0.5 / ampId3 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId3 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                   0. / ampId3 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId3 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId3 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId3 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId3 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId3 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId3 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId3 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId3 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId3 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId3 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:1104,4248:2125:-1]' / [FITSpix] ampId0 total section              DSEC0   = '[5:1032,2185:4248]' / [FITSpix] ampId0 DATASEC                       BSEC0   = '[1033:1104,4248:2185:-1]' / [FITSpix] ampId0 BIASSEC                 CSEC0   = '[2:2057:2,2065:4128:-1]' / [CCDpix] ampId0 CCDSEC                    ASEC0   = '[2:2057:2,2064:1:-1]' / [CCDpix] ampId0 AMPSEC                       WCSNAMEE= 'Amplifier coordinates for ampId0' / TAPLINE2 chanId1                 CRPIX1E =                  0.5 / ampId0 axis1 WCSE reference pixel              CRPIX2E =               4248.5 / ampId0 axis2 WCSE reference pixel              CRVAL1E =                  -7. / ampId0 iWaxis1 WCSE coord value @ refpix       CRVAL2E =                   0. / ampId0 iWaxis2 WCSE coord value @ refpix       CD1_1E  =                   2. / ampId0 WCSE CTM1_1 from pix to iWC             CD1_2E  =                   0. / ampId0 WCSE CTM1_2 from pix to iWC             CD2_1E  =                   0. / ampId0 WCSE CTM2_1 from pix to iWC             CD2_2E  =                  -1. / ampId0 WCSE CTM2_2 from pix to iWC             CTYPE1E = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSE coord/proj type        CTYPE2E = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSE coord/proj type        CUNIT1E = 'CCDpix  '           / ampId0 iWaxis1 WCSE physical unit              CUNIT2E = 'CCDpix  '           / ampId0 iWaxis2 WCSE physical unit              CRDER1E =                   0. / ampId0 iWaxis1 WCSE coord random error         CRDER2E =                   0. / ampId0 iWaxis2 WCSE coord random error         CSYER1E =                   0. / ampId0 iWaxis1 WCSE coord systematic error     CSYER2E =                   0. / ampId0 iWaxis2 WCSE coord systematic error     WCSNAMEF= 'Pane coordinates for ampId0' / TAPLINE2 chanId1                      CRPIX1F =                  0.5 / ampId0 axis1 WCSF reference pixel              CRPIX2F =               4248.5 / ampId0 axis2 WCSF reference pixel              CRVAL1F =                  -7. / ampId0 iWaxis1 WCSF coord value @ refpix       CRVAL2F =                4128. / ampId0 iWaxis2 WCSF coord value @ refpix       CD1_1F  =                   2. / ampId0 WCSF CTM1_1 from pix to iWC             CD1_2F  =                   0. / ampId0 WCSF CTM1_2 from pix to iWC             CD2_1F  =                   0. / ampId0 WCSF CTM2_1 from pix to iWC             CD2_2F  =                   1. / ampId0 WCSF CTM2_2 from pix to iWC             CTYPE1F = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSF coord/proj type            CTYPE2F = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSF coord/proj type            CUNIT1F = 'CCDpix  '           / ampId0 iWaxis1 WCSF physical unit              CUNIT2F = 'CCDpix  '           / ampId0 iWaxis2 WCSF physical unit              CRDER1F =                   0. / ampId0 iWaxis1 WCSF coord random error         CRDER2F =                   0. / ampId0 iWaxis2 WCSF coord random error         CSYER1F =                   0. / ampId0 iWaxis1 WCSF coord systematic error     CSYER2F =                   0. / ampId0 iWaxis2 WCSF coord systematic error     TAPLIN2 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[2208:1105:-1,4248:2125:-1]' / [FITSpix] ampId2 total section        DSEC2   = '[1177:2204,2185:4248]' / [FITSpix] ampId2 DATASEC                    BSEC2   = '[1176:1105:-1,4248:2185:-1]' / [FITSpix] ampId2 BIASSEC              CSEC2   = '[2058:4113:-2,2065:4128:-1]' / [CCDpix] ampId2 CCDSEC                ASEC2   = '[2057:2:-2,2064:1:-1]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEG= 'Amplifier coordinates for ampId2' / TAPLINE3 chanId3                 CRPIX1G =               2208.5 / ampId2 axis1 WCSG reference pixel              CRPIX2G =               4248.5 / ampId2 axis2 WCSG reference pixel              CRVAL1G =                  -7. / ampId2 iWaxis1 WCSG coord value @ refpix       CRVAL2G =                   0. / ampId2 iWaxis2 WCSG coord value @ refpix       CD1_1G  =                  -2. / ampId2 WCSG CTM1_1 from pix to iWC             CD1_2G  =                   0. / ampId2 WCSG CTM1_2 from pix to iWC             CD2_1G  =                   0. / ampId2 WCSG CTM2_1 from pix to iWC             CD2_2G  =                  -1. / ampId2 WCSG CTM2_2 from pix to iWC             CTYPE1G = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSG coord/proj type        CTYPE2G = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSG coord/proj type        CUNIT1G = 'CCDpix  '           / ampId2 iWaxis1 WCSG physical unit              CUNIT2G = 'CCDpix  '           / ampId2 iWaxis2 WCSG physical unit              CRDER1G =                   0. / ampId2 iWaxis1 WCSG coord random error         CRDER2G =                   0. / ampId2 iWaxis2 WCSG coord random error         CSYER1G =                   0. / ampId2 iWaxis1 WCSG coord systematic error     CSYER2G =                   0. / ampId2 iWaxis2 WCSG coord systematic error     WCSNAMEH= 'Pane coordinates for ampId2' / TAPLINE3 chanId3                      CRPIX1H =               2208.5 / ampId2 axis1 WCSH reference pixel              CRPIX2H =               4248.5 / ampId2 axis2 WCSH reference pixel              CRVAL1H =                4121. / ampId2 iWaxis1 WCSH coord value @ refpix       CRVAL2H =                4128. / ampId2 iWaxis2 WCSH coord value @ refpix       CD1_1H  =                   2. / ampId2 WCSH CTM1_1 from pix to iWC             CD1_2H  =                   0. / ampId2 WCSH CTM1_2 from pix to iWC             CD2_1H  =                   0. / ampId2 WCSH CTM2_1 from pix to iWC             CD2_2H  =                   1. / ampId2 WCSH CTM2_2 from pix to iWC             CTYPE1H = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSH coord/proj type            CTYPE2H = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSH coord/proj type            CUNIT1H = 'CCDpix  '           / ampId2 iWaxis1 WCSH physical unit              CUNIT2H = 'CCDpix  '           / ampId2 iWaxis2 WCSH physical unit              CRDER1H =                   0. / ampId2 iWaxis1 WCSH coord random error         CRDER2H =                   0. / ampId2 iWaxis2 WCSH coord random error         CSYER1H =                   0. / ampId2 iWaxis1 WCSH coord systematic error     CSYER2H =                   0. / ampId2 iWaxis2 WCSH coord systematic error     TAPLIN3 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 1104 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    4 / Archon taps for this readout                   END                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_2_2.fits
new file mode 100644
index 0000000000..26533712fe
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2L1U1_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 1104 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2056 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  144 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 1028 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   72 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 1092 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 1032 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:1104,1:1092]'    / [FITSpix] ampId1 total section                 DSEC1   = '[5:1032,1:1032]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[1033:1104,1:1032]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[2:2057:2,1:2064:2]' / [CCDpix] ampId1 CCDSEC                        ASEC1   = '[2:2057:2,1:2064:2]' / [CCDpix] ampId1 AMPSEC                        WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[2208:1105:-1,1:1092]' / [FITSpix] ampId3 total section              DSEC3   = '[1177:2204,1:1032]' / [FITSpix] ampId3 DATASEC                       BSEC3   = '[1176:1105:-1,1:1032]' / [FITSpix] ampId3 BIASSEC                    CSEC3   = '[2058:4113:-2,1:2064:2]' / [CCDpix] ampId3 CCDSEC                    ASEC3   = '[2057:2:-2,1:2064:2]' / [CCDpix] ampId3 AMPSEC                       WCSNAMEC= 'Amplifier coordinates for ampId3' / TAPLINE1 chanId4                 CRPIX1C =               2208.5 / ampId3 axis1 WCSC reference pixel              CRPIX2C =                  0.5 / ampId3 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId3 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId3 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -2. / ampId3 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId3 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId3 WCSC CTM2_1 from pix to iWC             CD2_2C  =                   2. / ampId3 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId3 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId3 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId3 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId3 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId3 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId3 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId3' / TAPLINE1 chanId4                      CRPIX1D =               2208.5 / ampId3 axis1 WCSD reference pixel              CRPIX2D =                  0.5 / ampId3 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId3 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                   0. / ampId3 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId3 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId3 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId3 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId3 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId3 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId3 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId3 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId3 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId3 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId3 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                AMPNM0  = 'L1      '           / ampId0 name                                    TSEC0   = '[1:1104,2184:1093:-1]' / [FITSpix] ampId0 total section              DSEC0   = '[5:1032,1153:2184]' / [FITSpix] ampId0 DATASEC                       BSEC0   = '[1033:1104,2184:1153:-1]' / [FITSpix] ampId0 BIASSEC                 CSEC0   = '[2:2057:2,2065:4128:-2]' / [CCDpix] ampId0 CCDSEC                    ASEC0   = '[2:2057:2,2064:1:-2]' / [CCDpix] ampId0 AMPSEC                       WCSNAMEE= 'Amplifier coordinates for ampId0' / TAPLINE2 chanId1                 CRPIX1E =                  0.5 / ampId0 axis1 WCSE reference pixel              CRPIX2E =               2184.5 / ampId0 axis2 WCSE reference pixel              CRVAL1E =                  -7. / ampId0 iWaxis1 WCSE coord value @ refpix       CRVAL2E =                   0. / ampId0 iWaxis2 WCSE coord value @ refpix       CD1_1E  =                   2. / ampId0 WCSE CTM1_1 from pix to iWC             CD1_2E  =                   0. / ampId0 WCSE CTM1_2 from pix to iWC             CD2_1E  =                   0. / ampId0 WCSE CTM2_1 from pix to iWC             CD2_2E  =                  -2. / ampId0 WCSE CTM2_2 from pix to iWC             CTYPE1E = 'AMPLIFIER_X for ampId0' / ampId0 iWaxis1 WCSE coord/proj type        CTYPE2E = 'AMPLIFIER_Y for ampId0' / ampId0 iWaxis2 WCSE coord/proj type        CUNIT1E = 'CCDpix  '           / ampId0 iWaxis1 WCSE physical unit              CUNIT2E = 'CCDpix  '           / ampId0 iWaxis2 WCSE physical unit              CRDER1E =                   0. / ampId0 iWaxis1 WCSE coord random error         CRDER2E =                   0. / ampId0 iWaxis2 WCSE coord random error         CSYER1E =                   0. / ampId0 iWaxis1 WCSE coord systematic error     CSYER2E =                   0. / ampId0 iWaxis2 WCSE coord systematic error     WCSNAMEF= 'Pane coordinates for ampId0' / TAPLINE2 chanId1                      CRPIX1F =                  0.5 / ampId0 axis1 WCSF reference pixel              CRPIX2F =               2184.5 / ampId0 axis2 WCSF reference pixel              CRVAL1F =                  -7. / ampId0 iWaxis1 WCSF coord value @ refpix       CRVAL2F =                4128. / ampId0 iWaxis2 WCSF coord value @ refpix       CD1_1F  =                   2. / ampId0 WCSF CTM1_1 from pix to iWC             CD1_2F  =                   0. / ampId0 WCSF CTM1_2 from pix to iWC             CD2_1F  =                   0. / ampId0 WCSF CTM2_1 from pix to iWC             CD2_2F  =                   2. / ampId0 WCSF CTM2_2 from pix to iWC             CTYPE1F = 'PANE_X for ampId0'  / ampId0 iWaxis1 WCSF coord/proj type            CTYPE2F = 'PANE_Y for ampId0'  / ampId0 iWaxis2 WCSF coord/proj type            CUNIT1F = 'CCDpix  '           / ampId0 iWaxis1 WCSF physical unit              CUNIT2F = 'CCDpix  '           / ampId0 iWaxis2 WCSF physical unit              CRDER1F =                   0. / ampId0 iWaxis1 WCSF coord random error         CRDER2F =                   0. / ampId0 iWaxis2 WCSF coord random error         CSYER1F =                   0. / ampId0 iWaxis1 WCSF coord systematic error     CSYER2F =                   0. / ampId0 iWaxis2 WCSF coord systematic error     TAPLIN2 = 'AD1L,1,113'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[2208:1105:-1,2184:1093:-1]' / [FITSpix] ampId2 total section        DSEC2   = '[1177:2204,1153:2184]' / [FITSpix] ampId2 DATASEC                    BSEC2   = '[1176:1105:-1,2184:1153:-1]' / [FITSpix] ampId2 BIASSEC              CSEC2   = '[2058:4113:-2,2065:4128:-2]' / [CCDpix] ampId2 CCDSEC                ASEC2   = '[2057:2:-2,2064:1:-2]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEG= 'Amplifier coordinates for ampId2' / TAPLINE3 chanId3                 CRPIX1G =               2208.5 / ampId2 axis1 WCSG reference pixel              CRPIX2G =               2184.5 / ampId2 axis2 WCSG reference pixel              CRVAL1G =                  -7. / ampId2 iWaxis1 WCSG coord value @ refpix       CRVAL2G =                   0. / ampId2 iWaxis2 WCSG coord value @ refpix       CD1_1G  =                  -2. / ampId2 WCSG CTM1_1 from pix to iWC             CD1_2G  =                   0. / ampId2 WCSG CTM1_2 from pix to iWC             CD2_1G  =                   0. / ampId2 WCSG CTM2_1 from pix to iWC             CD2_2G  =                  -2. / ampId2 WCSG CTM2_2 from pix to iWC             CTYPE1G = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSG coord/proj type        CTYPE2G = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSG coord/proj type        CUNIT1G = 'CCDpix  '           / ampId2 iWaxis1 WCSG physical unit              CUNIT2G = 'CCDpix  '           / ampId2 iWaxis2 WCSG physical unit              CRDER1G =                   0. / ampId2 iWaxis1 WCSG coord random error         CRDER2G =                   0. / ampId2 iWaxis2 WCSG coord random error         CSYER1G =                   0. / ampId2 iWaxis1 WCSG coord systematic error     CSYER2G =                   0. / ampId2 iWaxis2 WCSG coord systematic error     WCSNAMEH= 'Pane coordinates for ampId2' / TAPLINE3 chanId3                      CRPIX1H =               2208.5 / ampId2 axis1 WCSH reference pixel              CRPIX2H =               2184.5 / ampId2 axis2 WCSH reference pixel              CRVAL1H =                4121. / ampId2 iWaxis1 WCSH coord value @ refpix       CRVAL2H =                4128. / ampId2 iWaxis2 WCSH coord value @ refpix       CD1_1H  =                   2. / ampId2 WCSH CTM1_1 from pix to iWC             CD1_2H  =                   0. / ampId2 WCSH CTM1_2 from pix to iWC             CD2_1H  =                   0. / ampId2 WCSH CTM2_1 from pix to iWC             CD2_2H  =                   2. / ampId2 WCSH CTM2_2 from pix to iWC             CTYPE1H = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSH coord/proj type            CTYPE2H = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSH coord/proj type            CUNIT1H = 'CCDpix  '           / ampId2 iWaxis1 WCSH physical unit              CUNIT2H = 'CCDpix  '           / ampId2 iWaxis2 WCSH physical unit              CRDER1H =                   0. / ampId2 iWaxis1 WCSH coord random error         CRDER2H =                   0. / ampId2 iWaxis2 WCSH coord random error         CSYER1H =                   0. / ampId2 iWaxis1 WCSH coord systematic error     CSYER2H =                   0. / ampId2 iWaxis2 WCSH coord systematic error     TAPLIN3 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 1104 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 1092 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    4 / Archon taps for this readout                   END                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_1_1.fits
new file mode 100644
index 0000000000..f880bcfc84
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2057 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2057 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:2117,1:4188]'    / [FITSpix] ampId1 total section                 DSEC1   = '[8:2064,1:4128]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[2065:2117,1:4128]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[1:2057,1:4128]'    / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[1:2057,1:4128]'    / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[4234:2118:-1,1:4188]' / [FITSpix] ampId3 total section              DSEC3   = '[2171:4227,1:4128]' / [FITSpix] ampId3 DATASEC                       BSEC3   = '[2170:2118:-1,1:4128]' / [FITSpix] ampId3 BIASSEC                    CSEC3   = '[2058:4114:-1,1:4128]' / [CCDpix] ampId3 CCDSEC                      ASEC3   = '[2057:1:-1,1:4128]' / [CCDpix] ampId3 AMPSEC                         WCSNAMEC= 'Amplifier coordinates for ampId3' / TAPLINE1 chanId4                 CRPIX1C =               4234.5 / ampId3 axis1 WCSC reference pixel              CRPIX2C =                  0.5 / ampId3 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId3 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId3 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -1. / ampId3 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId3 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId3 WCSC CTM2_1 from pix to iWC             CD2_2C  =                   1. / ampId3 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId3 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId3 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId3 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId3 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId3 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId3 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId3' / TAPLINE1 chanId4                      CRPIX1D =               4234.5 / ampId3 axis1 WCSD reference pixel              CRPIX2D =                  0.5 / ampId3 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId3 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                   0. / ampId3 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId3 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId3 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId3 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId3 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId3 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId3 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId3 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId3 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId3 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId3 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_1_2.fits
new file mode 100644
index 0000000000..ac2b350c79
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2057 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2057 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:2117,1:2124]'    / [FITSpix] ampId1 total section                 DSEC1   = '[8:2064,1:2064]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[2065:2117,1:2064]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[1:2057,1:4128:2]'  / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[1:2057,1:4128:2]'  / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[4234:2118:-1,1:2124]' / [FITSpix] ampId3 total section              DSEC3   = '[2171:4227,1:2064]' / [FITSpix] ampId3 DATASEC                       BSEC3   = '[2170:2118:-1,1:2064]' / [FITSpix] ampId3 BIASSEC                    CSEC3   = '[2058:4114:-1,1:4128:2]' / [CCDpix] ampId3 CCDSEC                    ASEC3   = '[2057:1:-1,1:4128:2]' / [CCDpix] ampId3 AMPSEC                       WCSNAMEC= 'Amplifier coordinates for ampId3' / TAPLINE1 chanId4                 CRPIX1C =               4234.5 / ampId3 axis1 WCSC reference pixel              CRPIX2C =                  0.5 / ampId3 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId3 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId3 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -1. / ampId3 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId3 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId3 WCSC CTM2_1 from pix to iWC             CD2_2C  =                   2. / ampId3 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId3 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId3 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId3 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId3 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId3 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId3 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId3' / TAPLINE1 chanId4                      CRPIX1D =               4234.5 / ampId3 axis1 WCSD reference pixel              CRPIX2D =                  0.5 / ampId3 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId3 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                   0. / ampId3 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId3 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId3 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId3 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId3 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId3 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId3 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId3 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId3 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId3 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId3 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_2_1.fits
new file mode 100644
index 0000000000..f738c61ae7
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 1104 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2056 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  144 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 1028 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   72 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:1104,1:4188]'    / [FITSpix] ampId1 total section                 DSEC1   = '[5:1032,1:4128]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[1033:1104,1:4128]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[2:2057:2,1:4128]'  / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[2:2057:2,1:4128]'  / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[2208:1105:-1,1:4188]' / [FITSpix] ampId3 total section              DSEC3   = '[1177:2204,1:4128]' / [FITSpix] ampId3 DATASEC                       BSEC3   = '[1176:1105:-1,1:4128]' / [FITSpix] ampId3 BIASSEC                    CSEC3   = '[2058:4113:-2,1:4128]' / [CCDpix] ampId3 CCDSEC                      ASEC3   = '[2057:2:-2,1:4128]' / [CCDpix] ampId3 AMPSEC                         WCSNAMEC= 'Amplifier coordinates for ampId3' / TAPLINE1 chanId4                 CRPIX1C =               2208.5 / ampId3 axis1 WCSC reference pixel              CRPIX2C =                  0.5 / ampId3 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId3 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId3 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -2. / ampId3 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId3 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId3 WCSC CTM2_1 from pix to iWC             CD2_2C  =                   1. / ampId3 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId3 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId3 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId3 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId3 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId3 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId3 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId3' / TAPLINE1 chanId4                      CRPIX1D =               2208.5 / ampId3 axis1 WCSD reference pixel              CRPIX2D =                  0.5 / ampId3 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId3 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                   0. / ampId3 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId3 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId3 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId3 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId3 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId3 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId3 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId3 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId3 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId3 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId3 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 1104 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_2_2.fits
new file mode 100644
index 0000000000..d552392eab
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2U2_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 2057 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 1104 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 2056 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  144 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 1028 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   72 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:1104,1:2124]'    / [FITSpix] ampId1 total section                 DSEC1   = '[5:1032,1:2064]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[1033:1104,1:2064]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[2:2057:2,1:4128:2]' / [CCDpix] ampId1 CCDSEC                        ASEC1   = '[2:2057:2,1:4128:2]' / [CCDpix] ampId1 AMPSEC                        WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[2208:1105:-1,1:2124]' / [FITSpix] ampId3 total section              DSEC3   = '[1177:2204,1:2064]' / [FITSpix] ampId3 DATASEC                       BSEC3   = '[1176:1105:-1,1:2064]' / [FITSpix] ampId3 BIASSEC                    CSEC3   = '[2058:4113:-2,1:4128:2]' / [CCDpix] ampId3 CCDSEC                    ASEC3   = '[2057:2:-2,1:4128:2]' / [CCDpix] ampId3 AMPSEC                       WCSNAMEC= 'Amplifier coordinates for ampId3' / TAPLINE1 chanId4                 CRPIX1C =               2208.5 / ampId3 axis1 WCSC reference pixel              CRPIX2C =                  0.5 / ampId3 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId3 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId3 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -2. / ampId3 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId3 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId3 WCSC CTM2_1 from pix to iWC             CD2_2C  =                   2. / ampId3 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId3 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId3 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId3 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId3 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId3 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId3 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId3' / TAPLINE1 chanId4                      CRPIX1D =               2208.5 / ampId3 axis1 WCSD reference pixel              CRPIX2D =                  0.5 / ampId3 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId3 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                   0. / ampId3 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId3 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId3 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId3 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId3 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId3 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId3 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId3 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId3 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId3 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId3 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    1 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    2 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 1104 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_1_1.fits
new file mode 100644
index 0000000000..43fdace9f9
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:4174,1:4188]'    / [FITSpix] ampId1 total section                 DSEC1   = '[8:4121,1:4128]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[4122:4174,1:4128]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[1:4114,1:4128]'    / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[1:4114,1:4128]'    / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_1_2.fits
new file mode 100644
index 0000000000..f60adcd4bd
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:4174,1:2124]'    / [FITSpix] ampId1 total section                 DSEC1   = '[8:4121,1:2064]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[4122:4174,1:2064]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[1:4114,1:4128:2]'  / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[1:4114,1:4128:2]'  / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   1. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_2_1.fits
new file mode 100644
index 0000000000..dcbc2b21be
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:2117,1:4188]'    / [FITSpix] ampId1 total section                 DSEC1   = '[5:2060,1:4128]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[2062:2117,1:4128]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[2:4113:2,1:4128]'  / [CCDpix] ampId1 CCDSEC                         ASEC1   = '[2:4113:2,1:4128]'  / [CCDpix] ampId1 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_2_2.fits
new file mode 100644
index 0000000000..e1cc257734
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerL2_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM1  = 'L2      '           / ampId1 name                                    TSEC1   = '[1:2117,1:2124]'    / [FITSpix] ampId1 total section                 DSEC1   = '[5:2060,1:2064]'    / [FITSpix] ampId1 DATASEC                       BSEC1   = '[2062:2117,1:2064]' / [FITSpix] ampId1 BIASSEC                       CSEC1   = '[2:4113:2,1:4128:2]' / [CCDpix] ampId1 CCDSEC                        ASEC1   = '[2:4113:2,1:4128:2]' / [CCDpix] ampId1 AMPSEC                        WCSNAMEA= 'Amplifier coordinates for ampId1' / TAPLINE0 chanId2                 CRPIX1A =                  0.5 / ampId1 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId1 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId1 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId1 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                   2. / ampId1 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId1 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId1 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId1 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId1' / ampId1 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId1' / ampId1 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId1 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId1 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId1 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId1 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId1 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId1 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId1' / TAPLINE0 chanId2                      CRPIX1B =                  0.5 / ampId1 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId1 axis2 WCSB reference pixel              CRVAL1B =                  -7. / ampId1 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId1 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId1 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId1 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId1 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId1 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId1'  / ampId1 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId1'  / ampId1 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId1 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId1 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId1 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId1 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId1 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId1 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD2L,1,114'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    0 / parameter H_RIGHT for this readout             H_LEFT  =                    1 / parameter H_LEFT for this readout              HLRS    =                    0 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_1_1.fits
new file mode 100644
index 0000000000..8ec0292545
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[4174:1:-1,4188:1:-1]' / [FITSpix] ampId2 total section              DSEC2   = '[54:4167,61:4188]'  / [FITSpix] ampId2 DATASEC                       BSEC2   = '[53:1:-1,4188:61:-1]' / [FITSpix] ampId2 BIASSEC                     CSEC2   = '[1:4114:-1,1:4128:-1]' / [CCDpix] ampId2 CCDSEC                      ASEC2   = '[4114:1:-1,4128:1:-1]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEA= 'Amplifier coordinates for ampId2' / TAPLINE0 chanId3                 CRPIX1A =               4174.5 / ampId2 axis1 WCSA reference pixel              CRPIX2A =               4188.5 / ampId2 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId2 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId2 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -1. / ampId2 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId2 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId2 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -1. / ampId2 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId2 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId2 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId2 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId2 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId2 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId2 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId2' / TAPLINE0 chanId3                      CRPIX1B =               4174.5 / ampId2 axis1 WCSB reference pixel              CRPIX2B =               4188.5 / ampId2 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId2 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId2 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId2 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId2 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId2 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId2 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId2 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId2 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId2 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId2 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId2 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId2 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_1_2.fits
new file mode 100644
index 0000000000..d00b2c1fc4
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[4174:1:-1,2124:1:-1]' / [FITSpix] ampId2 total section              DSEC2   = '[54:4167,61:2124]'  / [FITSpix] ampId2 DATASEC                       BSEC2   = '[53:1:-1,2124:61:-1]' / [FITSpix] ampId2 BIASSEC                     CSEC2   = '[1:4114:-1,1:4128:-2]' / [CCDpix] ampId2 CCDSEC                      ASEC2   = '[4114:1:-1,4128:1:-2]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEA= 'Amplifier coordinates for ampId2' / TAPLINE0 chanId3                 CRPIX1A =               4174.5 / ampId2 axis1 WCSA reference pixel              CRPIX2A =               2124.5 / ampId2 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId2 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId2 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -1. / ampId2 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId2 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId2 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -2. / ampId2 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId2 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId2 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId2 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId2 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId2 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId2 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId2' / TAPLINE0 chanId3                      CRPIX1B =               4174.5 / ampId2 axis1 WCSB reference pixel              CRPIX2B =               2124.5 / ampId2 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId2 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId2 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId2 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId2 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId2 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId2 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId2 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId2 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId2 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId2 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId2 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId2 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_2_1.fits
new file mode 100644
index 0000000000..123d349cad
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[2117:1:-1,4188:1:-1]' / [FITSpix] ampId2 total section              DSEC2   = '[58:2113,61:4188]'  / [FITSpix] ampId2 DATASEC                       BSEC2   = '[56:1:-1,4188:61:-1]' / [FITSpix] ampId2 BIASSEC                     CSEC2   = '[2:4113:-2,1:4128:-1]' / [CCDpix] ampId2 CCDSEC                      ASEC2   = '[4113:2:-2,4128:1:-1]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEA= 'Amplifier coordinates for ampId2' / TAPLINE0 chanId3                 CRPIX1A =               2117.5 / ampId2 axis1 WCSA reference pixel              CRPIX2A =               4188.5 / ampId2 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId2 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId2 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -2. / ampId2 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId2 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId2 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -1. / ampId2 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId2 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId2 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId2 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId2 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId2 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId2 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId2' / TAPLINE0 chanId3                      CRPIX1B =               2117.5 / ampId2 axis1 WCSB reference pixel              CRPIX2B =               4188.5 / ampId2 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId2 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId2 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId2 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId2 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId2 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId2 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId2 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId2 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId2 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId2 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId2 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId2 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_2_2.fits
new file mode 100644
index 0000000000..64fb2db3fe
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU1_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[2117:1:-1,2124:1:-1]' / [FITSpix] ampId2 total section              DSEC2   = '[58:2113,61:2124]'  / [FITSpix] ampId2 DATASEC                       BSEC2   = '[56:1:-1,2124:61:-1]' / [FITSpix] ampId2 BIASSEC                     CSEC2   = '[2:4113:-2,1:4128:-2]' / [CCDpix] ampId2 CCDSEC                      ASEC2   = '[4113:2:-2,4128:1:-2]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEA= 'Amplifier coordinates for ampId2' / TAPLINE0 chanId3                 CRPIX1A =               2117.5 / ampId2 axis1 WCSA reference pixel              CRPIX2A =               2124.5 / ampId2 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId2 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId2 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -2. / ampId2 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId2 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId2 WCSA CTM2_1 from pix to iWC             CD2_2A  =                  -2. / ampId2 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId2 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId2 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId2 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId2 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId2 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId2 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId2' / TAPLINE0 chanId3                      CRPIX1B =               2117.5 / ampId2 axis1 WCSB reference pixel              CRPIX2B =               2124.5 / ampId2 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId2 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                4128. / ampId2 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId2 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId2 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId2 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId2 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId2 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId2 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId2 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId2 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId2 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId2 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    1 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    1 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_1_1.fits
new file mode 100644
index 0000000000..3945ea9e55
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[4174:1:-1,1:2124]' / [FITSpix] ampId3 total section                 DSEC3   = '[54:4167,1:2064]'   / [FITSpix] ampId3 DATASEC                       BSEC3   = '[53:1:-1,1:2064]'   / [FITSpix] ampId3 BIASSEC                       CSEC3   = '[1:4114:-1,1:2064]' / [CCDpix] ampId3 CCDSEC                         ASEC3   = '[4114:1:-1,1:2064]' / [CCDpix] ampId3 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId3' / TAPLINE0 chanId4                 CRPIX1A =               4174.5 / ampId3 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId3 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId3 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId3 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -1. / ampId3 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId3 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId3 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId3 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId3 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId3 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId3 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId3 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId3 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId3 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId3' / TAPLINE0 chanId4                      CRPIX1B =               4174.5 / ampId3 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId3 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId3 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId3 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId3 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId3 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId3 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId3 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId3 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId3 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId3 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId3 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId3 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId3 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[4174:1:-1,4248:2125:-1]' / [FITSpix] ampId2 total section           DSEC2   = '[54:4167,2185:4248]' / [FITSpix] ampId2 DATASEC                      BSEC2   = '[53:1:-1,4248:2185:-1]' / [FITSpix] ampId2 BIASSEC                   CSEC2   = '[1:4114:-1,2065:4128:-1]' / [CCDpix] ampId2 CCDSEC                   ASEC2   = '[4114:1:-1,2064:1:-1]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEC= 'Amplifier coordinates for ampId2' / TAPLINE1 chanId3                 CRPIX1C =               4174.5 / ampId2 axis1 WCSC reference pixel              CRPIX2C =               4248.5 / ampId2 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId2 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId2 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -1. / ampId2 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId2 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId2 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -1. / ampId2 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId2 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId2 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId2 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId2 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId2 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId2 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId2' / TAPLINE1 chanId3                      CRPIX1D =               4174.5 / ampId2 axis1 WCSD reference pixel              CRPIX2D =               4248.5 / ampId2 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId2 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId2 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId2 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId2 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId2 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId2 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId2 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId2 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId2 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId2 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId2 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId2 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_1_2.fits
new file mode 100644
index 0000000000..75e3c4c17f
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 1092 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 1032 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[4174:1:-1,1:1092]' / [FITSpix] ampId3 total section                 DSEC3   = '[54:4167,1:1032]'   / [FITSpix] ampId3 DATASEC                       BSEC3   = '[53:1:-1,1:1032]'   / [FITSpix] ampId3 BIASSEC                       CSEC3   = '[1:4114:-1,1:2064:2]' / [CCDpix] ampId3 CCDSEC                       ASEC3   = '[4114:1:-1,1:2064:2]' / [CCDpix] ampId3 AMPSEC                       WCSNAMEA= 'Amplifier coordinates for ampId3' / TAPLINE0 chanId4                 CRPIX1A =               4174.5 / ampId3 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId3 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId3 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId3 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -1. / ampId3 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId3 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId3 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId3 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId3 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId3 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId3 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId3 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId3 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId3 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId3' / TAPLINE0 chanId4                      CRPIX1B =               4174.5 / ampId3 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId3 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId3 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId3 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId3 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId3 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId3 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId3 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId3 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId3 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId3 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId3 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId3 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId3 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[4174:1:-1,2184:1093:-1]' / [FITSpix] ampId2 total section           DSEC2   = '[54:4167,1153:2184]' / [FITSpix] ampId2 DATASEC                      BSEC2   = '[53:1:-1,2184:1153:-1]' / [FITSpix] ampId2 BIASSEC                   CSEC2   = '[1:4114:-1,2065:4128:-2]' / [CCDpix] ampId2 CCDSEC                   ASEC2   = '[4114:1:-1,2064:1:-2]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEC= 'Amplifier coordinates for ampId2' / TAPLINE1 chanId3                 CRPIX1C =               4174.5 / ampId2 axis1 WCSC reference pixel              CRPIX2C =               2184.5 / ampId2 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId2 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId2 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -1. / ampId2 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId2 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId2 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -2. / ampId2 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId2 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId2 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId2 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId2 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId2 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId2 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId2' / TAPLINE1 chanId3                      CRPIX1D =               4174.5 / ampId2 axis1 WCSD reference pixel              CRPIX2D =               2184.5 / ampId2 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId2 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId2 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   1. / ampId2 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId2 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId2 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId2 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId2 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId2 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId2 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId2 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId2 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId2 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 1092 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_2_1.fits
new file mode 100644
index 0000000000..37757fdb9e
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[2117:1:-1,1:2124]' / [FITSpix] ampId3 total section                 DSEC3   = '[58:2113,1:2064]'   / [FITSpix] ampId3 DATASEC                       BSEC3   = '[56:1:-1,1:2064]'   / [FITSpix] ampId3 BIASSEC                       CSEC3   = '[2:4113:-2,1:2064]' / [CCDpix] ampId3 CCDSEC                         ASEC3   = '[4113:2:-2,1:2064]' / [CCDpix] ampId3 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId3' / TAPLINE0 chanId4                 CRPIX1A =               2117.5 / ampId3 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId3 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId3 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId3 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -2. / ampId3 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId3 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId3 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId3 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId3 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId3 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId3 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId3 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId3 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId3 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId3' / TAPLINE0 chanId4                      CRPIX1B =               2117.5 / ampId3 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId3 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId3 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId3 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId3 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId3 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId3 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId3 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId3 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId3 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId3 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId3 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId3 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId3 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[2117:1:-1,4248:2125:-1]' / [FITSpix] ampId2 total section           DSEC2   = '[58:2113,2185:4248]' / [FITSpix] ampId2 DATASEC                      BSEC2   = '[56:1:-1,4248:2185:-1]' / [FITSpix] ampId2 BIASSEC                   CSEC2   = '[2:4113:-2,2065:4128:-1]' / [CCDpix] ampId2 CCDSEC                   ASEC2   = '[4113:2:-2,2064:1:-1]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEC= 'Amplifier coordinates for ampId2' / TAPLINE1 chanId3                 CRPIX1C =               2117.5 / ampId2 axis1 WCSC reference pixel              CRPIX2C =               4248.5 / ampId2 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId2 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId2 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -2. / ampId2 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId2 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId2 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -1. / ampId2 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId2 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId2 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId2 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId2 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId2 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId2 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId2' / TAPLINE1 chanId3                      CRPIX1D =               2117.5 / ampId2 axis1 WCSD reference pixel              CRPIX2D =               4248.5 / ampId2 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId2 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId2 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId2 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId2 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId2 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   1. / ampId2 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId2 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId2 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId2 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId2 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId2 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId2 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_2_2.fits
new file mode 100644
index 0000000000..24f59061b6
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2U1_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 2064 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 1092 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 2064 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 1032 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[2117:1:-1,1:1092]' / [FITSpix] ampId3 total section                 DSEC3   = '[58:2113,1:1032]'   / [FITSpix] ampId3 DATASEC                       BSEC3   = '[56:1:-1,1:1032]'   / [FITSpix] ampId3 BIASSEC                       CSEC3   = '[2:4113:-2,1:2064:2]' / [CCDpix] ampId3 CCDSEC                       ASEC3   = '[4113:2:-2,1:2064:2]' / [CCDpix] ampId3 AMPSEC                       WCSNAMEA= 'Amplifier coordinates for ampId3' / TAPLINE0 chanId4                 CRPIX1A =               2117.5 / ampId3 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId3 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId3 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId3 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -2. / ampId3 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId3 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId3 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId3 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId3 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId3 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId3 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId3 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId3 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId3 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId3' / TAPLINE0 chanId4                      CRPIX1B =               2117.5 / ampId3 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId3 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId3 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId3 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId3 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId3 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId3 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId3 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId3 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId3 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId3 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId3 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId3 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId3 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                AMPNM2  = 'U1      '           / ampId2 name                                    TSEC2   = '[2117:1:-1,2184:1093:-1]' / [FITSpix] ampId2 total section           DSEC2   = '[58:2113,1153:2184]' / [FITSpix] ampId2 DATASEC                      BSEC2   = '[56:1:-1,2184:1153:-1]' / [FITSpix] ampId2 BIASSEC                   CSEC2   = '[2:4113:-2,2065:4128:-2]' / [CCDpix] ampId2 CCDSEC                   ASEC2   = '[4113:2:-2,2064:1:-2]' / [CCDpix] ampId2 AMPSEC                      WCSNAMEC= 'Amplifier coordinates for ampId2' / TAPLINE1 chanId3                 CRPIX1C =               2117.5 / ampId2 axis1 WCSC reference pixel              CRPIX2C =               2184.5 / ampId2 axis2 WCSC reference pixel              CRVAL1C =                  -7. / ampId2 iWaxis1 WCSC coord value @ refpix       CRVAL2C =                   0. / ampId2 iWaxis2 WCSC coord value @ refpix       CD1_1C  =                  -2. / ampId2 WCSC CTM1_1 from pix to iWC             CD1_2C  =                   0. / ampId2 WCSC CTM1_2 from pix to iWC             CD2_1C  =                   0. / ampId2 WCSC CTM2_1 from pix to iWC             CD2_2C  =                  -2. / ampId2 WCSC CTM2_2 from pix to iWC             CTYPE1C = 'AMPLIFIER_X for ampId2' / ampId2 iWaxis1 WCSC coord/proj type        CTYPE2C = 'AMPLIFIER_Y for ampId2' / ampId2 iWaxis2 WCSC coord/proj type        CUNIT1C = 'CCDpix  '           / ampId2 iWaxis1 WCSC physical unit              CUNIT2C = 'CCDpix  '           / ampId2 iWaxis2 WCSC physical unit              CRDER1C =                   0. / ampId2 iWaxis1 WCSC coord random error         CRDER2C =                   0. / ampId2 iWaxis2 WCSC coord random error         CSYER1C =                   0. / ampId2 iWaxis1 WCSC coord systematic error     CSYER2C =                   0. / ampId2 iWaxis2 WCSC coord systematic error     WCSNAMED= 'Pane coordinates for ampId2' / TAPLINE1 chanId3                      CRPIX1D =               2117.5 / ampId2 axis1 WCSD reference pixel              CRPIX2D =               2184.5 / ampId2 axis2 WCSD reference pixel              CRVAL1D =                4121. / ampId2 iWaxis1 WCSD coord value @ refpix       CRVAL2D =                4128. / ampId2 iWaxis2 WCSD coord value @ refpix       CD1_1D  =                   2. / ampId2 WCSD CTM1_1 from pix to iWC             CD1_2D  =                   0. / ampId2 WCSD CTM1_2 from pix to iWC             CD2_1D  =                   0. / ampId2 WCSD CTM2_1 from pix to iWC             CD2_2D  =                   2. / ampId2 WCSD CTM2_2 from pix to iWC             CTYPE1D = 'PANE_X for ampId2'  / ampId2 iWaxis1 WCSD coord/proj type            CTYPE2D = 'PANE_Y for ampId2'  / ampId2 iWaxis2 WCSD coord/proj type            CUNIT1D = 'CCDpix  '           / ampId2 iWaxis1 WCSD physical unit              CUNIT2D = 'CCDpix  '           / ampId2 iWaxis2 WCSD physical unit              CRDER1D =                   0. / ampId2 iWaxis1 WCSD coord random error         CRDER2D =                   0. / ampId2 iWaxis2 WCSD coord random error         CSYER1D =                   0. / ampId2 iWaxis1 WCSD coord systematic error     CSYER2D =                   0. / ampId2 iWaxis2 WCSD coord systematic error     TAPLIN1 = 'AD3R,1,122'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    1 / parameter V_SPLIT for this readout             V_UP    =                    0 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 1092 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    2 / Archon FRAMEMODE for this readout              TAPLINES=                    2 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_1_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_1_1.fits
new file mode 100644
index 0000000000..bcbf8f991e
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_1_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[4174:1:-1,1:4188]' / [FITSpix] ampId3 total section                 DSEC3   = '[54:4167,1:4128]'   / [FITSpix] ampId3 DATASEC                       BSEC3   = '[53:1:-1,1:4128]'   / [FITSpix] ampId3 BIASSEC                       CSEC3   = '[1:4114:-1,1:4128]' / [CCDpix] ampId3 CCDSEC                         ASEC3   = '[4114:1:-1,1:4128]' / [CCDpix] ampId3 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId3' / TAPLINE0 chanId4                 CRPIX1A =               4174.5 / ampId3 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId3 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId3 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId3 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -1. / ampId3 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId3 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId3 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId3 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId3 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId3 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId3 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId3 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId3 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId3 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId3' / TAPLINE0 chanId4                      CRPIX1B =               4174.5 / ampId3 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId3 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId3 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId3 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId3 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId3 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId3 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId3 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId3 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId3 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId3 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId3 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId3 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId3 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_1_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_1_2.fits
new file mode 100644
index 0000000000..7f90d9263a
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_1_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 4174 / [FITSpix] total FITS pixels                    PPSCPIX1=                    7 / [CCDpix] pure prescan pixels                   PMICPIX1=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4114 / [CCDpix] pure image pixels                     IMOCPIX1=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                   53 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    7 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 4114 / [FITSpix] pure image pixels                    MIOFPIX1=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   53 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[4174:1:-1,1:2124]' / [FITSpix] ampId3 total section                 DSEC3   = '[54:4167,1:2064]'   / [FITSpix] ampId3 DATASEC                       BSEC3   = '[53:1:-1,1:2064]'   / [FITSpix] ampId3 BIASSEC                       CSEC3   = '[1:4114:-1,1:4128:2]' / [CCDpix] ampId3 CCDSEC                       ASEC3   = '[4114:1:-1,1:4128:2]' / [CCDpix] ampId3 AMPSEC                       WCSNAMEA= 'Amplifier coordinates for ampId3' / TAPLINE0 chanId4                 CRPIX1A =               4174.5 / ampId3 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId3 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId3 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId3 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -1. / ampId3 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId3 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId3 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId3 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId3 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId3 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId3 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId3 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId3 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId3 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId3' / TAPLINE0 chanId4                      CRPIX1B =               4174.5 / ampId3 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId3 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId3 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId3 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   1. / ampId3 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId3 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId3 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId3 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId3 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId3 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId3 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId3 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId3 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId3 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    0 / parameter HBIN2 for this readout               PIXELCNT=                 4174 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_2_1.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_2_1.fits
new file mode 100644
index 0000000000..c278b7212d
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_2_1.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    1 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 4188 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                   60 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 4128 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[2117:1:-1,1:4188]' / [FITSpix] ampId3 total section                 DSEC3   = '[58:2113,1:4128]'   / [FITSpix] ampId3 DATASEC                       BSEC3   = '[56:1:-1,1:4128]'   / [FITSpix] ampId3 BIASSEC                       CSEC3   = '[2:4113:-2,1:4128]' / [CCDpix] ampId3 CCDSEC                         ASEC3   = '[4113:2:-2,1:4128]' / [CCDpix] ampId3 AMPSEC                         WCSNAMEA= 'Amplifier coordinates for ampId3' / TAPLINE0 chanId4                 CRPIX1A =               2117.5 / ampId3 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId3 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId3 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId3 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -2. / ampId3 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId3 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId3 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   1. / ampId3 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId3 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId3 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId3 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId3 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId3 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId3 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId3' / TAPLINE0 chanId4                      CRPIX1B =               2117.5 / ampId3 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId3 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId3 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId3 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId3 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId3 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId3 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   1. / ampId3 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId3 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId3 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId3 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId3 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId3 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId3 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    0 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 4188 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_2_2.fits b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_2_2.fits
new file mode 100644
index 0000000000..067d399257
--- /dev/null
+++ b/pypeit/data/spectrographs/keck_lris_red_mark4/headerU2_2_2.fits
@@ -0,0 +1 @@
+SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                    8 / number of bits per data pixel                  NAXIS   =                    0 / number of data axes                            EXTEND  =                    T / FITS dataset may contain extensions            COMMENT   FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H PSCPIX1 =                    7 / [CCDpix] detector prescan pixels               IMCPIX1 =                 4114 / [CCDpix] detector image pixels                 BINFAC1 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX1=                 2117 / [FITSpix] total FITS pixels                    PPSCPIX1=                    6 / [CCDpix] pure prescan pixels                   PMICPIX1=                    1 / [CCDpix] prescan mixed with image pixels       IMPCPIX1=                    1 / [CCDpix] image mixed with prescan pixels       PIMCPIX1=                 4112 / [CCDpix] pure image pixels                     IMOCPIX1=                    1 / [CCDpix] image mixed with overscan pixels      OMICPIX1=                    1 / [CCDpix] overscan mixed with image pixels      POSCPIX1=                  112 / [CCDpix] pure overscan pixels                  PPSFPIX1=                    3 / [FITSpix] pure prescan pixels                  MPIFPIX1=                    1 / [FITSpix] mixed prescan+image pixels           PIMFPIX1=                 2056 / [FITSpix] pure image pixels                    MIOFPIX1=                    1 / [FITSpix] mixed image+overscan pixels          POSFPIX1=                   56 / [FITSpix] pure overscan pixels                 PSCPIX2 =                    0 / [CCDpix] detector prescan pixels               IMCPIX2 =                 4128 / [CCDpix] detector image pixels                 BINFAC2 =                    2 / [CCDpix/FITSpix] bin factor                    TOTFPIX2=                 2124 / [FITSpix] total FITS pixels                    PPSCPIX2=                    0 / [CCDpix] pure prescan pixels                   PMICPIX2=                    0 / [CCDpix] prescan mixed with image pixels       IMPCPIX2=                    0 / [CCDpix] image mixed with prescan pixels       PIMCPIX2=                 4128 / [CCDpix] pure image pixels                     IMOCPIX2=                    0 / [CCDpix] image mixed with overscan pixels      OMICPIX2=                    0 / [CCDpix] overscan mixed with image pixels      POSCPIX2=                  120 / [CCDpix] pure overscan pixels                  PPSFPIX2=                    0 / [FITSpix] pure prescan pixels                  MPIFPIX2=                    0 / [FITSpix] mixed prescan+image pixels           PIMFPIX2=                 2064 / [FITSpix] pure image pixels                    MIOFPIX2=                    0 / [FITSpix] mixed image+overscan pixels          POSFPIX2=                   60 / [FITSpix] pure overscan pixels                 AMPNM3  = 'U2      '           / ampId3 name                                    TSEC3   = '[2117:1:-1,1:2124]' / [FITSpix] ampId3 total section                 DSEC3   = '[58:2113,1:2064]'   / [FITSpix] ampId3 DATASEC                       BSEC3   = '[56:1:-1,1:2064]'   / [FITSpix] ampId3 BIASSEC                       CSEC3   = '[2:4113:-2,1:4128:2]' / [CCDpix] ampId3 CCDSEC                       ASEC3   = '[4113:2:-2,1:4128:2]' / [CCDpix] ampId3 AMPSEC                       WCSNAMEA= 'Amplifier coordinates for ampId3' / TAPLINE0 chanId4                 CRPIX1A =               2117.5 / ampId3 axis1 WCSA reference pixel              CRPIX2A =                  0.5 / ampId3 axis2 WCSA reference pixel              CRVAL1A =                  -7. / ampId3 iWaxis1 WCSA coord value @ refpix       CRVAL2A =                   0. / ampId3 iWaxis2 WCSA coord value @ refpix       CD1_1A  =                  -2. / ampId3 WCSA CTM1_1 from pix to iWC             CD1_2A  =                   0. / ampId3 WCSA CTM1_2 from pix to iWC             CD2_1A  =                   0. / ampId3 WCSA CTM2_1 from pix to iWC             CD2_2A  =                   2. / ampId3 WCSA CTM2_2 from pix to iWC             CTYPE1A = 'AMPLIFIER_X for ampId3' / ampId3 iWaxis1 WCSA coord/proj type        CTYPE2A = 'AMPLIFIER_Y for ampId3' / ampId3 iWaxis2 WCSA coord/proj type        CUNIT1A = 'CCDpix  '           / ampId3 iWaxis1 WCSA physical unit              CUNIT2A = 'CCDpix  '           / ampId3 iWaxis2 WCSA physical unit              CRDER1A =                   0. / ampId3 iWaxis1 WCSA coord random error         CRDER2A =                   0. / ampId3 iWaxis2 WCSA coord random error         CSYER1A =                   0. / ampId3 iWaxis1 WCSA coord systematic error     CSYER2A =                   0. / ampId3 iWaxis2 WCSA coord systematic error     WCSNAMEB= 'Pane coordinates for ampId3' / TAPLINE0 chanId4                      CRPIX1B =               2117.5 / ampId3 axis1 WCSB reference pixel              CRPIX2B =                  0.5 / ampId3 axis2 WCSB reference pixel              CRVAL1B =                4121. / ampId3 iWaxis1 WCSB coord value @ refpix       CRVAL2B =                   0. / ampId3 iWaxis2 WCSB coord value @ refpix       CD1_1B  =                   2. / ampId3 WCSB CTM1_1 from pix to iWC             CD1_2B  =                   0. / ampId3 WCSB CTM1_2 from pix to iWC             CD2_1B  =                   0. / ampId3 WCSB CTM2_1 from pix to iWC             CD2_2B  =                   2. / ampId3 WCSB CTM2_2 from pix to iWC             CTYPE1B = 'PANE_X for ampId3'  / ampId3 iWaxis1 WCSB coord/proj type            CTYPE2B = 'PANE_Y for ampId3'  / ampId3 iWaxis2 WCSB coord/proj type            CUNIT1B = 'CCDpix  '           / ampId3 iWaxis1 WCSB physical unit              CUNIT2B = 'CCDpix  '           / ampId3 iWaxis2 WCSB physical unit              CRDER1B =                   0. / ampId3 iWaxis1 WCSB coord random error         CRDER2B =                   0. / ampId3 iWaxis2 WCSB coord random error         CSYER1B =                   0. / ampId3 iWaxis1 WCSB coord systematic error     CSYER2B =                   0. / ampId3 iWaxis2 WCSB coord systematic error     TAPLIN0 = 'AD4R,1,127'         / Archon chanIdBufdir,gain,offset                V_SPLIT =                    0 / parameter V_SPLIT for this readout             V_UP    =                    1 / parameter V_UP for this readout                V_DOWN  =                    0 / parameter V_DOWN for this readout              H_SPLIT =                    0 / parameter H_SPLIT for this readout             H_RIGHT =                    1 / parameter H_RIGHT for this readout             H_LEFT  =                    0 / parameter H_LEFT for this readout              HLRS    =                    1 / old KTL keyword hlrs for this readout          VBIN2   =                    1 / parameter VBIN2 for this readout               HBIN2   =                    1 / parameter HBIN2 for this readout               PIXELCNT=                 2117 / [FITSpix] Archon PIXELCOUNT for this readout   LINECNT =                 2124 / [FITSpix] Archon LINECOUNT for this readout    FRAMEMOD=                    0 / Archon FRAMEMODE for this readout              TAPLINES=                    1 / Archon taps for this readout                   END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
\ No newline at end of file
diff --git a/pypeit/spectrographs/keck_lris.py b/pypeit/spectrographs/keck_lris.py
index e24fa04a05..632e530e37 100644
--- a/pypeit/spectrographs/keck_lris.py
+++ b/pypeit/spectrographs/keck_lris.py
@@ -5,6 +5,7 @@
 """
 import glob
 import os
+import pdb
 
 from IPython import embed
 
@@ -15,6 +16,8 @@
 from astropy.io import fits
 from astropy import time
 
+from linetools import utils as ltu
+
 from pypeit import msgs
 from pypeit import telescopes
 from pypeit import io
@@ -123,7 +126,7 @@ def init_meta(self):
         self.meta['target'] = dict(ext=0, card='TARGNAME')
         self.meta['decker'] = dict(ext=0, card='SLITNAME')
         self.meta['binning'] = dict(card=None, compound=True)
-
+        # 
         self.meta['mjd'] = dict(ext=0, card='MJD-OBS')
         self.meta['exptime'] = dict(ext=0, card='ELAPTIME')
         self.meta['airmass'] = dict(ext=0, card='AIRMASS')
@@ -135,6 +138,12 @@ def init_meta(self):
         self.meta['frameno'] = dict(ext=0, card='FRAMENO')
         self.meta['instrument'] = dict(ext=0, card='INSTRUME')
 
+        # Extras for pypeit file
+        if self.name == 'keck_lris_red_mark4':
+            self.meta['amp'] = dict(ext=0, card='TAPLINES')
+        else:
+            self.meta['amp'] = dict(ext=0, card='NUMAMPS')
+
         # Lamps -- Have varied in time..
         for kk in range(12): # This needs to match the length of LAMPS below
             self.meta['lampstat{:02d}'.format(kk+1)] = dict(card=None, compound=True)
@@ -156,10 +165,11 @@ def compound_meta(self, headarr, meta_key):
         if meta_key == 'binning':
             binspatial, binspec = parse.parse_binning(headarr[0]['BINNING'])
             binning = parse.binning2string(binspec, binspatial)
+
             return binning
         elif 'lampstat' in meta_key:
             idx = int(meta_key[-2:])
-            curr_date = time.Time(headarr[0]['MJD-OBS'], format='mjd')
+            curr_date = time.Time(self.get_meta_value(headarr, 'mjd'), format='mjd')
             # Modern -- Assuming the change occurred with the new red detector
             t_newlamp = time.Time("2014-02-15", format='isot')  # LAMPS changed in Header
             if curr_date > t_newlamp:
@@ -237,8 +247,11 @@ def check_frame_type(self, ftype, fitstbl, exprng=None):
         if ftype == 'bias':
             return good_exp & self.lamps(fitstbl, 'off') & (fitstbl['hatch'] == 'closed')
         if ftype in ['pixelflat', 'trace', 'illumflat']:
+            # Allow for dome or internal
+            good_dome = self.lamps(fitstbl, 'dome') & (fitstbl['hatch'] == 'open')
+            good_internal = self.lamps(fitstbl, 'halogen') & (fitstbl['hatch'] == 'closed')
             # Flats and trace frames are typed together
-            return good_exp & self.lamps(fitstbl, 'dome') & (fitstbl['hatch'] == 'open')
+            return good_exp & (good_dome + good_internal)
         if ftype in ['pinhole', 'dark']:
             # Don't type pinhole or dark frames
             return np.zeros(len(fitstbl), dtype=bool)
@@ -271,17 +284,24 @@ def lamps(self, fitstbl, status):
             # Check if all are off
             return np.all(np.array([ (fitstbl[k] == 'off') | (fitstbl[k] == 'None')
                                         for k in fitstbl.keys() if 'lampstat' in k]), axis=0)
-        if status == 'arcs':
+        elif status == 'arcs':
             # Check if any arc lamps are on
             arc_lamp_stat = [ 'lampstat{0:02d}'.format(i) for i in range(1,9) ]
             return np.any(np.array([ fitstbl[k] == 'on' for k in fitstbl.keys()
                                             if k in arc_lamp_stat]), axis=0)
-        if status == 'dome':
+        elif status == 'dome':
             # Check if any dome lamps are on
             # Warning 9, 10 are FEARGON and DEUTERI
             dome_lamp_stat = [ 'lampstat{0:02d}'.format(i) for i in range(9,13) ]
             return np.any(np.array([ fitstbl[k] == 'on' for k in fitstbl.keys()
                                             if k in dome_lamp_stat]), axis=0)
+        elif status == 'halogen':
+            halo_lamp_stat = ['lampstat12']
+            return np.any(np.array([ fitstbl[k] == 'on' for k in fitstbl.keys()
+                                            if k in halo_lamp_stat]), axis=0)
+        else:
+            msgs.error(f"Bad status option! {status}")
+
         raise ValueError('No implementation for status = {0}'.format(status))
 
     def get_rawimage(self, raw_file, det):
@@ -832,7 +852,7 @@ class KeckLRISRSpectrograph(KeckLRISSpectrograph):
     camera = 'LRISr'
     header_name = 'LRIS'
     supported = True
-    comment = 'Red camera; see :doc:`lris`'
+    comment = 'Red camera;  LBNL detector, 2kx4k; see :doc:`lris`'
     
     def get_detector_par(self, det, hdu=None):
         """
@@ -883,7 +903,10 @@ def get_detector_par(self, det, hdu=None):
             # Allow for post COVID detector issues
             t2020_1 = time.Time("2020-06-30", format='isot')  # First run
             t2020_2 = time.Time("2020-07-29", format='isot')  # Second run
-            date = time.Time(hdu[0].header['MJD-OBS'], format='mjd')
+            # Check for the new detector (Mark4) upgrade
+            t2021_upgrade = time.Time("2021-04-15", format='isot') 
+            date = time.Time(self.get_meta_value(self.get_headarr(hdu), 'mjd'), 
+                             format='mjd')
 
             if date < t2020_1:
                 pass
@@ -893,6 +916,9 @@ def get_detector_par(self, det, hdu=None):
                 detector_dict2['gain'] = np.atleast_1d([1.26])
                 detector_dict1['ronoise'] = np.atleast_1d([99.])
                 detector_dict2['ronoise'] = np.atleast_1d([5.2])
+            elif date > t2021_upgrade: 
+                # Note:  We are unlikely to trip this.  Other things probably failed first
+                msgs.error("This is the new detector.  Use keck_lris_red_mark4")
             else: # This is the 2020 July 29 run
                 msgs.warn("We are using LRISr gain/RN values based on WMKO estimates.")
                 detector_dict1['gain'] = np.atleast_1d([1.45])
@@ -997,7 +1023,10 @@ def config_specific_par(self, scifile, inp_par=None):
 
         # Wavelength calibrations
         if self.get_meta_value(scifile, 'dispname') == '400/8500':  # This is basically a reidentify
-            par['calibrations']['wavelengths']['reid_arxiv'] = 'keck_lris_red_400.fits'
+            if self.name == 'keck_lris_red_mark4':
+                par['calibrations']['wavelengths']['reid_arxiv'] = 'keck_lris_red_mark4_R400.fits'
+            else:
+                par['calibrations']['wavelengths']['reid_arxiv'] = 'keck_lris_red_400.fits'
             par['calibrations']['wavelengths']['method'] = 'full_template'
             par['calibrations']['wavelengths']['sigdetect'] = 20.0
             par['calibrations']['wavelengths']['nsnippet'] = 1
@@ -1047,7 +1076,7 @@ def configuration_keys(self):
             and used to constuct the :class:`~pypeit.metadata.PypeItMetaData`
             object.
         """
-        return super().configuration_keys() + ['dispangle']
+        return super().configuration_keys() + ['dispangle', 'amp', 'binning']
 
     def bpm(self, filename, det, shape=None, msbias=None):
         """
@@ -1099,6 +1128,189 @@ def bpm(self, filename, det, shape=None, msbias=None):
 
         return bpm_img
 
+class KeckLRISRMark4Spectrograph(KeckLRISRSpectrograph):
+    """
+    Child to handle the new Mark4 detector
+    """
+    ndet = 1
+    name = 'keck_lris_red_mark4'
+    supported = True
+    comment = 'New Mark4 detector, circa Spring 2021; Supported setups = R400'
+
+    def init_meta(self):
+        super().init_meta()
+        # Over-ride a pair
+        self.meta['mjd'] = dict(ext=0, card='MJD')
+        self.meta['exptime'] = dict(ext=0, card='TELAPSE')
+
+    def get_detector_par(self, det, hdu=None):
+        """
+        Return metadata for the selected detector.
+
+        Args:
+            det (:obj:`int`):
+                1-indexed detector number.
+            hdu (`astropy.io.fits.HDUList`_, optional):
+                The open fits file with the raw image of interest.  If not
+                provided, frame-dependent parameters are set to a default.
+
+        Returns:
+            :class:`~pypeit.images.detector_container.DetectorContainer`:
+            Object with the detector metadata.
+        """
+        # Binning
+        binning = '1,1' if hdu is None else self.get_meta_value(self.get_headarr(hdu), 'binning')
+
+        # Detector 1
+        detector_dict1 = dict(
+            binning=binning,
+            det=1,
+            dataext=0,
+            specaxis=0,
+            specflip=True,  
+            spatflip=False,
+            platescale=0.123,  # From the web page
+            darkcurr=0.0,
+            saturation=65535.,
+            nonlinear=0.76,
+            mincounts=-1e10,
+            numamplifiers=2,  # These are defaults but can modify below
+            gain=np.atleast_1d([1.61, 1.67*0.959]), # Assumes AMPMODE=HSPLIT,VUP;  Corrected by JXP using 2x1 binned flats
+            ronoise=np.atleast_1d([3.65, 3.52]),
+        )
+
+        if hdu is None:
+            return detector_container.DetectorContainer(**detector_dict1)
+
+        # Date of Mark4 installation
+        t2021_upgrade = time.Time("2021-04-15", format='isot') 
+        # TODO -- Update with the date we transitioned to the correct ones
+        t_gdhead = time.Time("2022-01-01", format='isot')  
+        date = time.Time(hdu[0].header['MJD'], format='mjd')
+
+        if date < t2021_upgrade:
+            msgs.error("This is not the Mark4 detector.  Use a different keck_lris_red spectrograph")
+
+        # Deal with the intermediate headers
+        if date < t_gdhead:
+            amp_mode = hdu[0].header['AMPMODE']
+            msgs.info("AMPMODE = {:s}".format(amp_mode))
+            # Load up translation dict
+            ampmode_translate_file = os.path.join(
+                resource_filename('pypeit', 'data'), 'spectrographs',
+                'keck_lris_red_mark4', 'dict_for_ampmode.json')
+            ampmode_translate_dict = ltu.loadjson(ampmode_translate_file)
+            # Load up the corrected header
+            swap_binning = f"{binning[-1]},{binning[0]}"  # LRIS convention is oppopsite ours
+            header_file = os.path.join(
+                resource_filename('pypeit', 'data'), 'spectrographs',
+                'keck_lris_red_mark4', 
+                f'header{ampmode_translate_dict[amp_mode]}_{swap_binning.replace(",","_")}.fits')
+            correct_header = fits.getheader(header_file)
+        else:
+            correct_header = hdu[0].header
+
+        # Deal with number of amps
+        detector_dict1['numamplifiers'] = correct_header['TAPLINES']
+
+        # The website does not give values for single amp per detector so we take the mean
+        #   of the values provided
+        if detector_dict1['numamplifiers'] == 2: 
+            pass
+        elif detector_dict1['numamplifiers'] == 4:
+            # From the web page on 2021-10-04 (L1, L2, U1, U2)
+            #  Corrected by JXP and SS using chk_lris_mark4_gain.py in the DevSuite
+            detector_dict1['gain'] = np.atleast_1d([1.710, 
+                                                    1.64*1.0245,  # L2
+                                                    1.61*1.0185,  # U1
+                                                    1.67*1.0052]) # U2
+            detector_dict1['ronoise'] = np.atleast_1d([3.64, 3.45, 3.65, 3.52])
+        else:
+            msgs.error("Did not see this namps coming..")
+
+        detector_dict1['datasec'] = []
+        detector_dict1['oscansec'] = []
+
+        # Parse which AMPS were used
+        used_amps = []
+        for amp in range(4):
+            if f'AMPNM{amp}' in correct_header.keys():
+                used_amps.append(amp)
+        # Check
+        assert detector_dict1['numamplifiers'] == len(used_amps)
+
+        # Reverse engenieering to translate LRIS DSEC, BSEC
+        #  into ones friendly for PypeIt...
+        binspec = int(binning[0])
+        binspatial = int(binning[-1])
+        
+        for iamp in used_amps:
+            # These are column, row
+            dsecs = correct_header[f'DSEC{iamp}'].split(',')
+            d_rows = [int(item) for item in dsecs[1][:-1].split(':')]
+            d_cols = [int(item) for item in dsecs[0][1:].split(':')]
+            bsecs = correct_header[f'BSEC{iamp}'].split(',')
+            o_rows = [int(item) for item in bsecs[1][:-1].split(':')]
+            o_cols = [int(item) for item in bsecs[0][1:].split(':')]
+
+            # Deal with binning (heaven help me!!)
+            d_rows = [str(item*binspec) if item != 1 else str(item) for item in d_rows]
+            o_rows = [str(item*binspec) if item != 1 else str(item) for item in o_rows]
+            d_cols = [str(item*binspatial) if item != 1 else str(item) for item in d_cols]
+            o_cols = [str(item*binspatial) if item != 1 else str(item) for item in o_cols]
+
+            # These are now row, column
+            #  And they need to be native!!  i.e. no binning accounted for..
+            detector_dict1['datasec'] += [f"[{':'.join(d_rows)},{':'.join(d_cols)}]"]
+            detector_dict1['oscansec'] += [f"[{':'.join(o_rows)},{':'.join(o_cols)}]"]
+
+        detector_dict1['datasec'] = np.array(detector_dict1['datasec'])
+        detector_dict1['oscansec'] = np.array(detector_dict1['oscansec'])
+
+        # Instantiate
+        detector = detector_container.DetectorContainer(**detector_dict1)
+
+        #print('Dict1:', detector_dict1)
+        #print('Binning:', binning)
+
+        # Return
+        return detector
+
+    def get_rawimage(self, raw_file, det):
+        """
+        Read raw images and generate a few other bits and pieces
+        that are key for image processing.
+
+        Over-ride standard get_rawimage() for LRIS
+
+        Parameters
+        ----------
+        raw_file : :obj:`str`
+            File to read
+        det : :obj:`int`
+            1-indexed detector to read
+
+        Returns
+        -------
+        detector_par : :class:`pypeit.images.detector_container.DetectorContainer`
+            Detector metadata parameters.
+        raw_img : `numpy.ndarray`_
+            Raw image for this detector.
+        hdu : `astropy.io.fits.HDUList`_
+            Opened fits file
+        exptime : :obj:`float`
+            Exposure time read from the file header
+        rawdatasec_img : `numpy.ndarray`_
+            Data (Science) section of the detector as provided by setting the
+            (1-indexed) number of the amplifier used to read each detector
+            pixel. Pixels unassociated with any amplifier are set to 0.
+        oscansec_img : `numpy.ndarray`_
+            Overscan section of the detector as provided by setting the
+            (1-indexed) number of the amplifier used to read each detector
+            pixel. Pixels unassociated with any amplifier are set to 0.
+        """
+        # Note:  There is no way we know to super super super
+        return spectrograph.Spectrograph.get_rawimage(self, raw_file, det)
 
 class KeckLRISROrigSpectrograph(KeckLRISRSpectrograph):
     """
@@ -1108,7 +1320,7 @@ class KeckLRISROrigSpectrograph(KeckLRISRSpectrograph):
     name = 'keck_lris_red_orig'
     camera = 'LRISr'
     supported = True
-    comment = 'Original detector; replaced in 20??; see :doc:`lris`'
+    comment = 'Original detector; replaced in 2009; see :doc:`lris`'
 
     @classmethod
     def default_pypeit_par(cls):
@@ -1309,7 +1521,6 @@ def lris_read_amp(inp, ext):
     # parse the DATASEC keyword to determine the size of the science region (unbinned)
     datasec = header['DATASEC']
     xdata1, xdata2, ydata1, ydata2 = np.array(parse.load_sections(datasec, fmt_iraf=False)).flatten()
-
     # grab the components...
     predata = temp[0:precol, :]
     # datasec appears to have the x value for the keywords that are zero
@@ -1439,7 +1650,6 @@ def get_orig_rawimage(raw_file, debug=False):
         oscansec_img[:, biascols] = iamp+1
         imagecols = np.arange(1024 // xbin) + iamp * 1024 // xbin
         rawdatasec_img[:,imagecols + namps*(prepix // xbin)] = iamp+1
-
     return image, hdul, float(head0['ELAPTIME']), \
            rawdatasec_img, oscansec_img
 
diff --git a/pypeit/tests/test_setups.py b/pypeit/tests/test_setups.py
index 00094fd09e..10b7ffbca3 100644
--- a/pypeit/tests/test_setups.py
+++ b/pypeit/tests/test_setups.py
@@ -78,6 +78,26 @@ def test_setup_made_pypeit_file():
     # Cleanup
     shutil.rmtree(data_path('shane_kast_blue_A'))
 
+@dev_suite_required
+def test_setup_keck_lris_red_mark4():
+    droot = os.path.join(os.environ['PYPEIT_DEV'], 'RAW_DATA/keck_lris_red_mark4/long_400_8500')
+    droot += '/'
+    pargs = Setup.parse_args(['-r', droot, '-s', 'keck_lris_red_mark4'])
+    Setup.main(pargs)
+
+    cwd = os.getcwd()
+    setup_dir = os.path.join(cwd, 'setup_files')
+    assert os.path.isdir(setup_dir), 'No setup_files directory created'
+
+    files = glob.glob(os.path.join(setup_dir, 'keck_lris_red_mark4*'))
+    ext = [f.split('.')[-1] for f in files]
+    expected = expected_file_extensions()
+    assert np.all([e in ext for e in expected]), \
+            'Did not find all setup file extensions: {0}'.format(expected)
+
+    # Clean-up
+    shutil.rmtree(setup_dir)
+
 
 @dev_suite_required
 def test_setup_keck_lris_red():