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