FITS Headers
DIRBE_PSV_TABLE.FITS
Primary Header
SIMPLE = T / file does conform to FITS standard BITPIX = 32 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format defined in Astronomy and COMMENT Astrophysics Supplement Series v44/p363, v44/p371, v73/p359, v73/p365. COMMENT Contact the NASA Science Office of Standards and Technology for the COMMENT FITS Definition document #100 and other FITS information. DATE-MAP= '06/06/96' / Date of original data file creation DATE = '06/06/96' / FITS file creation date (dd/mm/yy) ORIGIN = 'CDAC ' / Cosmology Data Analysis Center TELESCOP= 'COBE ' / COsmic Background Explorer satellite INSTRUME= 'DIRBE ' / COBE instrument [DIRBE, DMR, FIRAS] OBJECT = 'ALL-SKY ' / part of sky given [ALL-SKY, GAL-SLICE] REFERENC= 'COBE/DIRBE Explanatory Supplement,' / REFERENC= 'ed. M.G. Hauser, T. Kelsall, D. Leisawitz, and J. Weiland,' / REFERENC= 'COBE Ref. Pub. No. 95-A (Greenbelt,MD: NASA/GSFC),' / REFERENC= 'available in electronic form from the NSSDC.' / COMMENT COBE specific keywords DATE-BEG= '11/12/89' / date of initial data represented (dd/mm/yy) DATE-END= '21/09/90' / date of final data represented (dd/mm/yy) PIXRESOL= 9 / Quad tree pixel resolution [6, 9] COMMENT COMMENT DIRBE specific keywords PRODUCT = 'PSVTAB ' / Photometric Standard Values Table VERSION = 'Pass 3B ' / Version of Data Reduction Software WAVE1 = '1.25 microns' / nominal wavelength of Band 1 WAVE2 = '2.2 microns' / nominal wavelength of Band 2 WAVE3 = '3.5 microns' / nominal wavelength of Band 3 WAVE4 = '4.9 microns' / nominal wavelength of Band 4 WAVE5 = '12. microns' / nominal wavelength of Band 5 WAVE6 = '25. microns' / nominal wavelength of Band 6 WAVE7 = '60. microns' / nominal wavelength of Band 7 WAVE8 = '100. microns' / nominal wavelength of Band 8 WAVE9 = '140. microns' / nominal wavelength of Band 9 WAVE10 = '240. microns' / nominal wavelength of Band 10 COMMENT COMMENT END
Extension Header 2
XTENSION= 'BINTABLE' / Extension type is Binary Table BITPIX = 8 / Binary data NAXIS = 2 / Data are in a table NAXIS1 = 222 / Number of 8 bit bytes in each row NAXIS2 = 92 / Number of rows PCOUNT = 0 / Number of bytes of data following table GCOUNT = 1 / Group count (always 1 for bintable extensions) TFIELDS = 13 / Number of fields (columns) in the table COMMENT ------------------------------------------------------------------- COMMENT ******************************************************************* COMMENT Photometric Standard Values Table -- COMMENT Photometric data for the 92 objects which were used to COMMENT establish the baseline relative celestial calibration system. COMMENT Data are provided for the full-intensity channels only, and COMMENT then only for those wavelengths for which the source was COMMENT selected as a calibration object. COMMENT Objects are sorted in order of increasing right ascension. COMMENT ******************************************************************* COMMENT ------------------------------------------------------------------- COMMENT =================================================================== COMMENT Object Identifiers: COMMENT =================================================================== COMMENT ------------------------------------------------------------------- COMMENT Calibration Object Name COMMENT Name of the calibration object. TTYPE1 = 'Name ' / entire fieldname = NAME TUNIT1 = ' ' / TFORM1 = '32A ' / COMMENT ------------------------------------------------------------------- COMMENT Object Index COMMENT DIRBE object index number. COMMENT range: 1-144. TTYPE2 = 'ObjIndex' / entire fieldname = object_index TUNIT2 = ' ' / TFORM2 = '1I ' / COMMENT ------------------------------------------------------------------- COMMENT =================================================================== COMMENT Coordinate Information: COMMENT =================================================================== COMMENT ------------------------------------------------------------------- COMMENT DIRBE Pixel number (resolution 9) COMMENT Number of the DIRBE pixel which contains the object. TTYPE3 = 'Pixel_No' / entire fieldname = PIXEL_NO TUNIT3 = ' ' / TFORM3 = '1J ' / COMMENT ------------------------------------------------------------------- COMMENT Right Ascension of Object, epoch 1950 COMMENT range = [0, 24) hours TTYPE4 = 'RA1950 ' / entire fieldname = ra_1950 TUNIT4 = 'hr ' / TFORM4 = '1E ' / COMMENT ------------------------------------------------------------------- COMMENT Declination of Object, epoch 1950 COMMENT range = [-90, 90] degrees TTYPE5 = 'DEC1950 ' / entire fieldname = dec_1950 TUNIT5 = 'deg ' / TFORM5 = '1E ' / COMMENT ------------------------------------------------------------------- COMMENT Galactic Longitude of Object COMMENT range = [0, 360) degrees TTYPE6 = 'GalLon ' / entire fieldname = gal_lon TUNIT6 = 'deg ' / TFORM6 = '1E ' / COMMENT ------------------------------------------------------------------- COMMENT Galactic Latitude of Object COMMENT range = [-90, 90] degrees TTYPE7 = 'GalLat ' / entire fieldname = gal_lat TUNIT7 = 'deg ' / TFORM7 = '1E ' / COMMENT ------------------------------------------------------------------- COMMENT Ecliptic Longitude of Object, epoch 2000 COMMENT range = [0, 360) degrees TTYPE8 = 'EclLon ' / entire fieldname = ecl_lon TUNIT8 = 'deg ' / TFORM8 = '1E ' / COMMENT ------------------------------------------------------------------- COMMENT Ecliptic Latitude of Object, epoch 2000 COMMENT range = [-90, 90] degrees TTYPE9 = 'EclLat ' / entire fieldname = ecl_lat TUNIT9 = 'deg ' / TFORM9 = '1E ' / COMMENT ------------------------------------------------------------------- COMMENT =================================================================== COMMENT Photometric Information: COMMENT =================================================================== COMMENT ------------------------------------------------------------------- COMMENT Source Photometry COMMENT Mission-averaged background-subtracted flux COMMENT density of the object, F(nu), in units of Jy. COMMENT Presented in increasing wavelength order from COMMENT 1.25 to 240 micron. Flux density is quoted COMMENT at the nominal wavelength for a source with assumed COMMENT energy distribution nu*F(nu) = constant -- i.e., COMMENT a color correction is required if the source COMMENT spectrum differs from the assumed distribution. COMMENT If a source was not a designated calibrator in COMMENT a given waveband, then the photometry value is COMMENT set to 0.0, regardless of the signal level. TTYPE10 = 'Photomet' / entire fieldname = Photometry TUNIT10 = 'Jy ' / TFORM10 = '10E ' / TDIM10 = '(10) ' / COMMENT ------------------------------------------------------------------- COMMENT Photometric Error COMMENT Standard deviation of the mean flux density quoted in the COMMENT Photometry field, in Jy. Listed in order of increasing COMMENT wavelength. COMMENT The error field is set to 0.0 for wavelengths COMMENT for which no photometry is provided. TTYPE11 = 'StdDev ' / entire fieldname = phot_error TUNIT11 = 'Jy ' / TFORM11 = '10E ' / TDIM11 = '(10) ' / COMMENT ------------------------------------------------------------------- COMMENT Total Number of Observations COMMENT The total number of individual observations, per waveband, COMMENT which were used in forming the photometric average. COMMENT Listed in order of increasing wavelength. TTYPE12 = 'NumObs ' / entire fieldname = num_obs TUNIT12 = ' ' / TFORM12 = '10J ' / TDIM12 = '(10) ' / COMMENT ------------------------------------------------------------------- COMMENT Average Background COMMENT Mission-averaged value of the background intensity, in MJy/sr, COMMENT for each waveband, listed in order of increasing wavelength. COMMENT The background value is set to 0.0 for wavelengths COMMENT for which no photometry is provided. TTYPE13 = 'AvgBkgd ' / entire fieldname = avg_bkgd TUNIT13 = 'MJy/sr ' / TFORM13 = '10E ' / TDIM13 = '(10) ' / COMMENT ------------------------------------------------------------------- END
