2015-09-16 ========== CDK20N Sloan filters John Kielkopf ============= 2017-04-11 ---------- Reprocessed to add WCS with concurrent bias, flat and dark fields ============= ngc869_00071_r_dfw.fits TARGET = NGC 869 EXPTIME = 100.0 FILTER = r_(530-700) DATE-OBS = 2015-09-17T05:26:30.138 ngc869_00072_i_dfw.fits TARGET = NGC 869 EXPTIME = 100.0 FILTER = i_(700-825) DATE-OBS = 2015-09-17T05:29:51.006 ngc869_00073_g_dfw.fits TARGET = NGC 869 EXPTIME = 100.0 FILTER = g_(400-530) DATE-OBS = 2015-09-17T05:32:14.652 Color image composite locked to WCS positions i -> r r -> g g -> b Log map with zero set slightly above sky to give dark background g scale is 2x r and b