ngc253_00055_V_df.fits
TARGET  = '                '   / target
EXPTIME =                 300. / exposure time (seconds)
FILTER  = ' (3) V (490-580) '  / filter
DATE-OBS= '2012-10-16T13:47:25' / date of observation (UT)

ngc253_00057_B_df.fits
TARGET  = '                '   / target
EXPTIME =                 300. / exposure time (seconds)
FILTER  = ' (2) B (375-490) '  / filter
DATE-OBS= '2012-10-16T13:58:42' / date of observation (UT)

SUM_Aligned_ngc253_B.fits 500 seconds total

SUM_Aligned_ngc253_R.fits 200 seconds total

SUM_Aligned_ngc253_V.fits 600 seconds total