FITS Headers
FIRAS_CALIBRATION_ERRORS_LLSS.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 = '24/09/97' / FITS file creation date (dd/mm/yy) ORIGIN = 'CDAC ' / Cosmology Data Analysis Center TELESCOP= 'COBE ' / COsmic Background Explorer satellite INSTRUME= 'FIRAS ' / COBE instrument [DIRBE, DMR, FIRAS] OBJECT = 'ALL-SKY ' / part of sky given [ALL-SKY, GAL-SLICE] PRODUCT = 'CAL-ERR ' / Calibration errors EQUINOX = 2000.0 / equinox of coords in following tables COMMENT REFERENC= 'For additional information, please refer to the' / REFERENC= 'COBE Far Infrared Absolute Spectrophotometer (FIRAS)' / REFERENC= 'Explanatory Supplement, ed. J.C. Mather et al,' / REFERENC= 'COBE Ref. Pub. No. 97-C (Greenbelt, MD: NASA/GSFC),' / REFERENC= 'available in electronic form from the NSSDC.' / COMMENT COMMENT COBE specific keywords DATE-BEG= '24/11/89' / date of initial data represented (dd/mm/yy) DATE-END= '21/09/90' / date of final data represented (dd/mm/yy) PIXRESOL= 6 / Quad tree pixel resolution [6, 9] COMMENT COMMENT FIRAS specific keywords CHANSCAN= 'LLSS ' / Channel and mirror transport mechanism scan COMMENT / mode identifier. The first two characters COMMENT / indicate the channel, the first being the COMMENT / instrument side: right (R) or left (L); and COMMENT / the second being the frequency: high (H) or COMMENT / low (L). The third and fourth characters COMMENT / indicate the scan mode, the third being the COMMENT / scan length: short (S) or long (L); and the COMMENT / fourth being the scan speed: slow (S) or COMMENT / fast (F). In addition, the scan mode may COMMENT / take the following values for low frequency COMMENT / data only (channel = RL or LL): COMMENT / FS: decimated SF data; COMMENT / FL: truncated LF data. COMMENT / The scan mode value FA indicates: for high COMMENT / frequency data (channel = RH or LH), a COMMENT / combination of SF and LF data; and for low COMMENT / frequency data (channel = RL or LL), a COMMENT / combination of FS and FL data. MODLLABL= 'PASS4 ' / FIRAS calibration model solution label MISS_SEG= 'ENTIRE_MISSION' / FIRAS segment of mission represented NU_ZERO = 68.020812 / Optical frequency of initial data point in GHz DELTA_NU= 13.604162 / Optical frequency interval between data points COMMENT / in GHz NUM_FREQ= 43 / Number of frequency points with good data END
Extension Header 2
XTENSION= 'BINTABLE' / Extension type is Binary Table BITPIX = 8 / Binary data NAXIS = 2 / Data are in a table NAXIS1 = 25208 / Number of 8 bit bytes in each row NAXIS2 = 1 / Number of rows PCOUNT = 0 / Number of bytes of data following table GCOUNT = 1 / Group count (always 1 for bintable extensions) TFIELDS = 8 / Number of fields (columns) in the table COMMENT COMMENT COMMENT FIRAS Calibration Errors COMMENT Project Dataset Record Structure COMMENT COMMENT COMMENT Error Terms COMMENT COMMENT Emissivity gain error (dimensionless) TFORM1 = '210E ' / TDIM1 = '(210) ' / TTYPE1 = 'PEP_GAIN' / entire fieldname = PEP_GAIN TUNIT1 = ' ' / COMMENT Emissivity offset error, in MJy/sr TFORM2 = '210E ' / TDIM2 = '(210) ' / TTYPE2 = 'PEP_OFFS' / entire fieldname = PEP_OFFSET TUNIT2 = 'MJy/sr ' / COMMENT Bolometer parameter gain error (dimensionless) TFORM3 = '2730E ' / TDIM3 = '(13,210)' / TTYPE3 = 'JCJ_GAIN' / entire fieldname = JCJ_GAIN TUNIT3 = ' ' / COMMENT Bolometer parameter offset error, in MJy/sr TFORM4 = '2730E ' / TDIM4 = '(13,210)' / TTYPE4 = 'JCJ_OFFS' / entire fieldname = JCJ_OFFSET TUNIT4 = 'MJy/sr ' / COMMENT Ical temperature error, in K TFORM5 = '1E ' / TTYPE5 = 'PUP_TEMP' / entire fieldname = PUP_TEMP TUNIT5 = 'K ' / COMMENT Ical temperature error spectrum, in MJy/sr TFORM6 = '210E ' / TDIM6 = '(210) ' / TTYPE6 = 'PUP_SPEC' / entire fieldname = PUP_SPEC TUNIT6 = 'MJy/sr ' / COMMENT Absolute temperature error, in K TFORM7 = '1E ' / TTYPE7 = 'PTP_TEMP' / entire fieldname = PTP_TEMP TUNIT7 = 'K ' / COMMENT Absolute temperature error spectrum, in MJy/sr TFORM8 = '210E ' / TDIM8 = '(210) ' / TTYPE8 = 'PTP_SPEC' / entire fieldname = PTP_SPEC TUNIT8 = 'MJy/sr ' / COMMENT END
