note Based on Massey and Davis, A User's Guide to Stellar CCD Photometry with IRAF Intro Getting started Fixing your headers Correcting the exposure time Computing the effective airmass Standard Star Photometry and Reduction Obtaining Aperture Photometry of your standards Picking an aperture size Setting things up Doing it: Aperture photometry at last Automatic star finding Photometry by eye WTF? Examining results: the power of txdump The Standard Star solutions Making the standard star catalog Making the standard star observations file Defining the transforms Solving the transformation equations Crowded field photometry: IRAF/daophot Historical summary Yeah, this will need to be updated daophot overview How big is a star: a few useful definitions Setting up the parameter files "daopars" and "datapars" Finding stars: daofind and tvmark Aperture photometry with phot Making the PSF with psf Doing the PSF fitting: allstar Matching the frames Determining the aperture correction daophot summary Transforming to the standard system. imexamine: a useful tool