Example image header (GOODS/ISAAC release v1.5)

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SIMPLE  =                    T          / Conforms to FITS standard
BITPIX  =                  -32          / Number of bits per data pixel
NAXIS   =                    2          / Number of data axes
NAXIS1  =                 1124          / Length of data axis 1
NAXIS2  =                 1110          / Length of data axis 2
EXTEND  =                    T          / FITS extension may be present
VOPUB   = 'ESO/VOS '                    / VO Publisher
VOCREATE= 'ESO/ADP/GOODS'               / VO Creator
VORELDAT= 'September 30 2005'           / Release date
ORIGIN  = 'GOODS   '                    / Project/dataset
VERSION = '1.5     '                    / Project/dataset release number
PI-COI  = 'C. Cesarsky'                 / Principle investigator(s)
TELESCOP= 'ESO-VLT-U1'                  / Telescope name
INSTRUME= 'ISAAC   '                    / Instrument name
OBJECT  = 'GOODS_29'                    / Target name
RADECSYS= 'ICRS    '                    / Coordinate reference frame
EQUINOX =               2000.0          / Equinox of celestial coord. system
RA      =            53.189402          / Right ascension of image center
DEC     =           -27.914719          / Declination of image center
TIMESYS = 'UTC     '                    / Time coordinate reference frame
DATE    = '2005-07-15T18:47:06'         / Date file was written
OBSSTART= '2004-02-02T03:28:10'         / Start datetime of first exposure
OBSEND  = '2004-09-01T10:02:40'         / End datetime of last exposure
MJDSTART=         53037.144571          / MJD start of first exposure
MJDEND  =         53249.418526          / MJD end of last exposure
FILTER  = 'J       '                    / Filter name
EXPTIME =                    1          / [sec] Exposure time
TEXPTIME=                 9000          / [sec] Total integrated exposure time NCOMBINE=                   75          / Number of combined exposures
GAIN    =            40499.998          / [e-/ADU] Gain
CTYPE1  = 'RA---TAN'                    / Type of sky projection
CTYPE2  = 'DEC--TAN'                    / Type of sky projection
CRVAL1  =            53.122751          / [deg] X reference coordinate value
CRVAL2  =           -27.805089          / [deg] Y reference coordinate value
CRPIX1  =               1976.5          / [pixel] X reference pixel
CRPIX2  =               3187.5          / [pixel] Y reference pixel
CD1_1   =        -4.166667E-05          / [deg/pixel] Matrix rotation
CD1_2   =                   0.          / [deg/pixel] Matrix rotation
CD2_1   =                   0.          / [deg/pixel] Matrix rotation
CD2_2   =         4.166667E-05          / [deg/pixel] Matrix rotation PHOTSYS = 'AB      '                    / Photometric system

PHOTZP  =                26.00          / Phot. zeropoint. mag = -2.5log(ADU)+ZP
PHOTZPER=                 0.03          / Photometric zeropoint error
PROCSOFT= 'ESO/MVM '                    / Processing software
BUNIT   = 'ADU/s   '                    / Units of data value
SEEING  =                 0.64          / Spatial resolution
SEEINERR=                 0.04          / Spatial resolution error
ASTRCAT = 'GSC2    '                    / Astrometric reference catalogue
ASTRERR = '0.1     '                    / RMS error of astrometric solution
END

Note: This header is based on an older version of our Guidelines and misses a small number of the currently defined keywords. It is intended to give an indication of what the Guidelines mean for the file headers only and not to serve as a template.