FITS Headers
FIRAS_LINE_PROFILES_LLLF.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 = '28/09/97' / 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 = 'LLINE-PR' / Low frequency line profiles 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= 'LLLF ' / 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 = 23.807283 / Optical frequency of initial data point in GHz DELTA_NU= 3.4010405 / Optical frequency interval between data points COMMENT / in GHz NUM_FREQ= 182 / 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 = 6720 / 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 Low Frequency Line Profiles COMMENT Project Dataset Record Structure COMMENT COMMENT COMMENT 115.27 GHz CO (J=1-0) line profile, in cm*MJy/(nanowatts/m^2) TFORM1 = '210E ' / TDIM1 = '(210) ' / TTYPE1 = 'CO_115 ' / entire fieldname = CO_115 TUNIT1 = 'cm*MJy/(nanowatts/m^2)' / COMMENT 230.54 GHz CO (J=2-1) line profile, in cm*MJy/(nanowatts/m^2) TFORM2 = '210E ' / TDIM2 = '(210) ' / TTYPE2 = 'CO_230 ' / entire fieldname = CO_230 TUNIT2 = 'cm*MJy/(nanowatts/m^2)' / COMMENT 345.80 GHz CO (J=3-2) line profile, in cm*MJy/(nanowatts/m^2) TFORM3 = '210E ' / TDIM3 = '(210) ' / TTYPE3 = 'CO_345 ' / entire fieldname = CO_345 TUNIT3 = 'cm*MJy/(nanowatts/m^2)' / COMMENT 424.75 GHz O2 line profile, in cm*MJy/(nanowatts/m^2) TFORM4 = '210E ' / TDIM4 = '(210) ' / TTYPE4 = 'O2_424 ' / entire fieldname = O2_424 TUNIT4 = 'cm*MJy/(nanowatts/m^2)' / COMMENT 461.04 GHz CO (J=4-3) line profile, in cm*MJy/(nanowatts/m^2) TFORM5 = '210E ' / TDIM5 = '(210) ' / TTYPE5 = 'CO_461 ' / entire fieldname = CO_461 TUNIT5 = 'cm*MJy/(nanowatts/m^2)' / COMMENT 492.23 GHz [C I] line profile, in cm*MJy/(nanowatts/m^2) TFORM6 = '210E ' / TDIM6 = '(210) ' / TTYPE6 = 'C_I_492 ' / entire fieldname = C_I_492 TUNIT6 = 'cm*MJy/(nanowatts/m^2)' / COMMENT 556.89 GHz H2O line profile, in cm*MJy/(nanowatts/m^2) TFORM7 = '210E ' / TDIM7 = '(210) ' / TTYPE7 = 'H2O_556 ' / entire fieldname = H2O_556 TUNIT7 = 'cm*MJy/(nanowatts/m^2)' / COMMENT 576.27 GHz CO (J=5-4) line profile, in cm*MJy/(nanowatts/m^2) TFORM8 = '210E ' / TDIM8 = '(210) ' / TTYPE8 = 'CO_576 ' / entire fieldname = CO_576 TUNIT8 = 'cm*MJy/(nanowatts/m^2)' / COMMENT END
