The source_catalog step uses the following user-settable arguments:
--bkg_boxsize: An integer value giving the background mesh box size in pixels--kernel_fwhm: A floating-point value giving the Gaussian kernel FWHM in pixels--snr_threshold: A floating-point value that sets the SNR threshold (above background) for source detection--npixels: An integer value that sets the minimum number of pixels in a source--deblend: A boolean indicating whether to deblend sources--aperture_ee1: An integer value of the smallest aperture encircled energy value--aperture_ee2: An integer value of the middle aperture encircled energy value--aperture_ee3: An integer value of the largest aperture encircled energy value--ci1_star_threshold: A floating-point value of the threshold compared to the concentration index calculated from aperture_ee1 and aperture_ee2 that is used to determine whether a source is a star. Sources must meet the criteria of both ci1_star_threshold and ci2_star_threshold to be considered a star.--ci2_star_threshold: A floating-point value of the threshold compared to the concentration index calculated from aperture_ee2 and aperture_ee3 that is used to determine whether a source is a star. Sources must meet the criteria of both ci1_star_threshold and ci2_star_threshold to be considered a star.--suffix: A string value giving the file name suffix to use for the output catalog file [default='cat']