This example shows the FITS header for an image from the second GOODS Spitzer data products release: n_irac_1_s2_v0.30_sci.fits (GOODS-N IRAC channel 1 superdeep epoch 2 version 0.30 science image).
/ GENERIC FITS KEYWORDS
SIMPLE = T / FITS standard
EXTEND = F / File may contain extensions
BITPIX = -32 / FOUR-BYTE SINGLE PRECISION FLOATING POINT
NAXIS = 2 / STANDARD FITS FORMAT
NAXIS1 = 2200 / Axis length
NAXIS2 = 2400 / Axis length
/ DATA FLOW KEYWORDS
ORIGIN = 'NOAO-IRAF FITS Image Kernel July 2003' / FITS file originator
IRAF-TLM= '18:05:29 (09/05/2005)' / Time of last modification
OBJECT = 'GOODS-N superdeep epoch 2 IRAC channel 1' / Name of the object observ
TELESCOP= 'Spitzer ' / SPITZER Space Telescope
INSTRUME= 'IRAC ' / SPITZER Space Telescope instrument ID
CHNLNUM = 1 / 1 digit instrument channel number
IMGTYPE = 'sci ' / Image Type
COMMENT Science data image
DATE = '2005-05-10T01:05:30' / [YYYY-MM-DDThh:mm:ss UTC] file creation date
GDP_VER = 'v0.30' / GOODS data product version number
FILENAM = 'n_irac_1_s2_v0.30_sci.fits' / Data product file name
/ PROPOSAL INFORMATION
OBSRVR = 'Mark Dickinson' / Observer Name
OBSRVRID= 110 / Observer ID of Principal Investigator
PROCYCL = 2 / Proposal Cycle
PROGID = 169 / Program ID
PROTITLE= 'Great Observatories Origins Deep Survey (GOODS)' / Program Title
PROGCAT = 27 / Program Category
/ TIME AND EXPOSURE INFORMATION
STRT_TIM= '2004-11-20T12:18:20' / Date & time at start of observing sequence
END_TIM = '2004-11-25T17:15:11' / Date & time at end of observing sequence
EXPTIME = 1.0 / [sec] Effective integration time per pixel
COMMENT Image normalized to DN/sec, with effective integration = 1.0 sec
/ TARGET AND POINTING INFORMATION
CRVAL1 = 189.228621000 / [deg] RA at CRPIX1,CRPIX2
CRVAL2 = 62.238661000 / [deg] DEC at CRPIX1,CRPIX2
RA_HMS = '12:36:54.8690' / [hh:mm:ss.ssss] CRVAL1 as sexagesimal
DEC_DMS = '+62:14:19.180' / [dd:mm:ss.sss] CRVAL2 as sexagesimal
RADESYS = 'ICRS ' / International Celestial Reference System
EQUINOX = 2000. / Equinox for ICRS celestial coord. system
CD1_1 = -0.000166666666667 /
CD1_2 = 0.00000000000 /
CD2_1 = 0.00000000000 /
CD2_2 = 0.000166666666667 /
CTYPE1 = 'RA---TAN' / RA---TAN
CTYPE2 = 'DEC--TAN' / DEC--TAN
CRPIX1 = 1110.5 / Reference pixel along axis 1
CRPIX2 = 1200.5 / Reference pixel along axis 2
/ PHOTOMETRY
BUNIT = 'DN/sec ' / Units of image data
FLUXCONV= 3.922 / [microJy per DN/sec] Flux conversion factor
MAGZERO = 22.416 / AB magnitude for 1 DN/sec
GAIN = 3.3 / [e/DN] Instrumental gain conversion
COMMENT Effective gain (e/[DN/sec]) for mosaic varies with exposure time.