Header listing for HDU #1: SIMPLE = T / file does conform to FITS standard BITPIX = 16 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 3072 / length of data axis 1 NAXIS2 = 2048 / length of data axis 2 EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H BZERO = 32768 / offset data range to that of unsigned short BSCALE = 1 / default scaling factor INSTRUME= 'SBIG STL' EXPTIME = 4. / exposure time (seconds) DATE = '03:42:57 2007-10-30' FILTER = ' (3) V (490-580) ' / Filter IMAGETYP= 'Light Frame' END