diff --git a/setup.cfg b/setup.cfg
index 357b339b..e2fbd986 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,12 +17,13 @@ packages = find:
 install_requires =
     jax>=0.4.12
     jaxlib>=0.4.12
-    flowMC>=0.2.4
+    flowMC>=0.3.4
     ripplegw
     gwpy
     corner
     astropy
     typed-argument-parser
+    jaxtyping>=0.2.31
     beartype
 python_requires =  >=3.9
 
diff --git a/src/jimgw/prior.py b/src/jimgw/prior.py
index e5675c8f..f1827753 100644
--- a/src/jimgw/prior.py
+++ b/src/jimgw/prior.py
@@ -234,8 +234,9 @@ class Sphere(Prior):
     def __repr__(self):
         return f"Sphere(naming={self.naming})"
 
-    def __init__(self, naming: str, **kwargs):
-        self.naming = [f"{naming}_theta", f"{naming}_phi", f"{naming}_mag"]
+    def __init__(self, naming: list[str], **kwargs):
+        name = naming[0]
+        self.naming = [f"{name}_theta", f"{name}_phi", f"{name}_mag"]
         self.transforms = {
             self.naming[0]: (
                 f"{naming}_x",
@@ -402,24 +403,30 @@ class EarthFrame(Prior):
     Prior distribution for sky location in Earth frame.
     """
 
+    ifos: list = field(default_factory=list)
+    gmst: float = 0.0
+    delta_x: Float[Array, " 3"] = field(default_factory=lambda: jnp.zeros(3))
+
     def __repr__(self):
         return f"EarthFrame(naming={self.naming})"
 
-    def __init__(self, naming: str, gps: Float, ifos: list, **kwargs):
-        self.naming = ["azimuth", "zenith"]
+    def __init__(self, gps: Float, ifos: list, **kwargs):
+        self.naming = ["zenith", "azimuth"]
         if len(ifos) < 2:
             return ValueError(
                 "At least two detectors are needed to define the Earth frame"
             )
         elif isinstance(ifos[0], str):
-            self.ifos = [detector_preset[ifo] for ifo in ifos[:2]]
+            self.ifos = [detector_preset[ifos[0]], detector_preset[ifos[1]]]
         elif isinstance(ifos[0], GroundBased2G):
-            self.ifos = ifos[:2]
+            self.ifos = ifos[:1]
         else:
             return ValueError(
-                "ifos should be a list of detector names or Detector objects"
+                "ifos should be a list of detector names or GroundBased2G objects"
             )
-        self.gmst = Time(gps, format="gps").sidereal_time("apparent", "greenwich").rad
+        self.gmst = float(
+            Time(gps, format="gps").sidereal_time("apparent", "greenwich").rad
+        )
         self.delta_x = self.ifos[1].vertex - self.ifos[0].vertex
 
         self.transforms = {
@@ -453,16 +460,17 @@ def sample(
         azimuth = jax.random.uniform(
             rng_keys[1], (n_samples,), minval=0, maxval=2 * jnp.pi
         )
-        return self.add_name(jnp.stack([azimuth, zenith], axis=1).T)
+        return self.add_name(jnp.stack([zenith, azimuth], axis=1).T)
 
     def log_prob(self, x: dict[str, Float]) -> Float:
         zenith = x["zenith"]
         azimuth = x["azimuth"]
         output = jnp.where(
-            (azimuth > 2 * jnp.pi) | (azimuth < 0) | (zenith > jnp.pi) | (zenith < 0),
+            (zenith > jnp.pi) | (zenith < 0) | (azimuth > 2 * jnp.pi) | (azimuth < 0),
             jnp.zeros_like(0) - jnp.inf,
+            jnp.zeros_like(0),
         )
-        return output
+        return output + jnp.log(jnp.sin(zenith))
 
 
 @jaxtyped(typechecker=typechecker)
diff --git a/src/jimgw/single_event/runManager.py b/src/jimgw/single_event/runManager.py
index 56eb9925..aeb2304a 100644
--- a/src/jimgw/single_event/runManager.py
+++ b/src/jimgw/single_event/runManager.py
@@ -196,9 +196,17 @@ def initialize_prior(self) -> prior.Prior:
         for name, parameters in self.run.priors.items():
             if parameters["name"] not in prior_presets:
                 raise ValueError(f"Prior {name} not recognized.")
-            priors.append(
-                prior_presets[parameters["name"]](naming=[name], **parameters)
-            )
+            if parameters["name"] == "EarthFrame":
+                priors.append(
+                    prior.EarthFrame(
+                        gps=self.run.data_parameters["trigger_time"],
+                        ifos=self.run.detectors,
+                    )
+                )
+            else:
+                priors.append(
+                    prior_presets[parameters["name"]](naming=[name], **parameters)
+                )
         return prior.Composite(priors)
 
     def initialize_detector(self) -> list[Detector]:
diff --git a/src/jimgw/single_event/waveform.py b/src/jimgw/single_event/waveform.py
index e2084ea1..6edbfd3f 100644
--- a/src/jimgw/single_event/waveform.py
+++ b/src/jimgw/single_event/waveform.py
@@ -2,10 +2,10 @@
 
 import jax.numpy as jnp
 from jaxtyping import Array, Float
-from ripple.waveforms.IMRPhenomD import gen_IMRPhenomD_hphc
-from ripple.waveforms.IMRPhenomPv2 import gen_IMRPhenomPv2_hphc
-from ripple.waveforms.TaylorF2 import gen_TaylorF2_hphc
-from ripple.waveforms.IMRPhenomD_NRTidalv2 import gen_IMRPhenomD_NRTidalv2_hphc
+from ripplegw.waveforms.IMRPhenomD import gen_IMRPhenomD_hphc
+from ripplegw.waveforms.IMRPhenomPv2 import gen_IMRPhenomPv2_hphc
+from ripplegw.waveforms.TaylorF2 import gen_TaylorF2_hphc
+from ripplegw.waveforms.IMRPhenomD_NRTidalv2 import gen_IMRPhenomD_NRTidalv2_hphc
 
 
 class Waveform(ABC):