IRAS Sky Survey Atlas Galactic FormatTable 1 shows the header of the I133B2H0 image, the co-added (all HCONs) intensity map centered at RA = 4h 12m, DEC = -20d 00m for the 25 micron band.
Table 1. Sample FITS header
SIMPLE = T / STANDARD FITS FORMAT
BITPIX = 16 / 2-byte twos-compl int
NAXIS = 3 / # OF AXES
NAXIS1 = 500 / # SAMPLES PER LINE
NAXIS2 = 500 / # LINES IN IMAGE
NAXIS3 = 1 / # WAVELENGTHS
BSCALE = 1.535204177E-03 / TRUE=TAPE*BSCALE+BZERO
BZERO = 5.309702310E+01 /
BUNIT = 'MJY/SR ' / INTENSITY
BLANK = -32768 / TAPE VALUE FOR EMPTY PIXEL
CRVAL1 = 6.300000000E+01 / RA AT ORIGIN (DEGREES)
CRPIX1 = 2.500000000E+02 / SAMPLE AXIS ORIGIN (PIXEL)
CTYPE1 = 'RA---TAN' / DECREASES IN VALUE AS SAMPLE
/ INDEX INCREASES (GNOMONIC)
CDELT1 = -2.500000000E-02 / COORD VALUE INCR DEG/PIXEL
/ AT ORIGIN ON SAMPLE AXIS
CRVAL2 = -2.000000000E+01 / DEC AT ORIGIN (DEGREES)
CRPIX2 = 2.500000000E+02 / LINE AXIS ORIGIN (PIXEL)
CTYPE2 = 'DEC--TAN' / DECREASES IN VALUE AS LINE
/ INDEX INCREASES (GNOMONIC)
CDELT2 = 2.500000000E-02 / COORD VALUE INCR DEG/PIXEL
/ AT ORIGIN ON LINE AXIS
CRVAL3 = 2.500000000E-05 / WAVELENGTH IN METERS
CRPIX3 = 1.000000000E+00 /
CTYPE3 = 'LAMBDA ' /
CDELT3 = 0.000000000E+00 /
DATAMAX = 1.029911589E+02 / MJY/SR (TRUE VALUE)
DATAMIN = 3.202887343E+00 / MJY/SR (TRUE VALUE)
EPOCH = 1.950000000E+03 / EME50
DATE-MAP= '91/05/27' / MAP CREATION DATE(YY/MM/DD)
DATE = '91/10/28' / DATE TAPE WRITTEN(YY/MM/DD)
ORIGIN = 'JPL-IPAC' / INSTITUTION
TELESCOP= 'IRAS ' /
INSTRUME= 'ISSA-I ' / IRAS SKY SURVEY ATLAS SET I
OBJECT = 'f133h000' / FIELD NUMBER-HCON
/
EDITED = T / SCANS EDITED
APPCAL = T / CALIBRATION CORRECTION 25 MICRON
DE-ZODY = T / DE-ZODIED IMAGE
GLBL-D = T / APPLIED GLOBAL PARAMETERS
LOCAL-D = T / LOCAL DESTRIPER
ASBLANK = T / ASTEROID BLANKING
COMMENT /
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
END
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