Night of 20120128 to 20120129 DATE-OBS= '2012-01-29T00:33:48' for m42_b_00054df_wcs.fits CDK20N Johnson-Cousins UBVRI filter set Astronometry with astrometry.net (4) 100 second exposures coadded in each frame with swarp png images produced by Python PIL and PYFITS