FITS Headers
FIRAS_LINE_EMISSION_MAP_HIGH.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 = '03/12/97' / 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 = 'HLIN-MAP' / High frequency line map 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= 'HIGH ' / Field indicating combination of data from COMMENT / various channels and mirror transport COMMENT / mechanism scan modes. LOWF is a combination COMMENT / of the low frequency RLSS, RLFS, RLFL, LLSS, COMMENT / LLFS, and LLFL data. HIGH is a combination o COMMENT f COMMENT / the high frequency RHSS, RHSF, RHLF, LHSS, COMMENT / LHSF, and LHLF data. HRES is a combination o COMMENT f COMMENT / the high resolution RLLF and LLLF data. For COMMENT / the uncombined channel/scan mode labels, the COMMENT / first two characters of the label indicate th COMMENT e COMMENT / channel, the first being the instrument side: COMMENT / right (R) or left (L); and the second being COMMENT / the frequency: high (H) or low (L). The COMMENT / third and fourth characters indicate the scan COMMENT / mode, the third being the scan length: short COMMENT / (S) or long (L); and the fourth being the sca COMMENT n COMMENT / speed: slow (S) or fast (F). In addition, COMMENT / the scan mode may take the following values COMMENT / for low frequency data only (channel = RL or COMMENT / LL): COMMENT / FS: decimated SF data; COMMENT / FL: truncated LF data. MODLLABL= 'PASS4 ' / FIRAS calibration model solution label MISS_SEG= 'ENTIRE_MISSION' / FIRAS segment of mission represented COMMENT NU_ZERO = 1800.0 / Characteristic freq of optical depth in GHz DUST_IND= 2.0 / Dust spectral index COMMENT / Ten line frequencies represented in this map LINFRQ1 = 691.47 / CO (J=6-5) line frequency, in GHz LINFRQ2 = 809.44 / [C I] line frequency, in GHz LINFRQ3 = 1113.3 / H2O line frequency, in GHz LINFRQ4 = 1461.1 / [N II] line frequency, in GHz LINFRQ5 = 1716.6 / H2O (J=2-1) line frequency, in GHz LINFRQ6 = 1900.5 / [C II] line frequency, in GHz LINFRQ7 = 2060.1 / [O I] line frequency, in GHz LINFRQ8 = 2311.7 / [Si I] line frequency, in GHz LINFRQ9 = 2459.4 / [N II] line frequency, in GHz LINFRQ10= 2589.6 / CH (J=2-1) line frequency, in GHz END
Extension Header 2
XTENSION= 'BINTABLE' / Extension type is Binary Table BITPIX = 8 / Binary data NAXIS = 2 / Data are in a table NAXIS1 = 156 / Number of 8 bit bytes in each row NAXIS2 = 6067 / Number of rows PCOUNT = 0 / Number of bytes of data following table GCOUNT = 1 / Group count (always 1 for bintable extensions) TFIELDS = 12 / Number of fields (columns) in the table COMMENT COMMENT COMMENT FIRAS High Frequency Line Emission Map COMMENT Project Dataset Record Structure COMMENT COMMENT COMMENT FIRAS pixel number (resolution 6) TFORM1 = '1J ' / TTYPE1 = 'PIXEL ' / entire fieldname = PIXEL TUNIT1 = ' ' / COMMENT Galactic longitude, in deg (0 -> 360) TFORM2 = '1E ' / TTYPE2 = 'GAL_LON ' / entire fieldname = GAL_LON TUNIT2 = 'deg ' / COMMENT Galactic latitude, in deg (-90 -> +90) TFORM3 = '1E ' / TTYPE3 = 'GAL_LAT ' / entire fieldname = GAL_LAT TUNIT3 = 'deg ' / COMMENT Pixel weight TFORM4 = '1E ' / TTYPE4 = 'WEIGHT ' / entire fieldname = WEIGHT TUNIT4 = ' ' / COMMENT COMMENT Line Flux Parameters and Uncertainties COMMENT COMMENT Line flux, in nano-Watts/(m^2*sr) TFORM5 = '10E ' / TDIM5 = '(10) ' / TTYPE5 = 'LINE_FLU' / entire fieldname = LINE_FLUX TUNIT5 = 'nano-Watts/(m^2*sr)' / COMMENT Sigmas of line flux, in nano-Watts/(m^2*sr) TFORM6 = '10E ' / TDIM6 = '(10) ' / TTYPE6 = 'LINE_FL2' / entire fieldname = LINE_FLUX_SIGMA TUNIT6 = 'nano-Watts/(m^2*sr)' / COMMENT PEP gain sigmas of line flux, in nano-Watts/(m^2*sr) TFORM7 = '10E ' / TDIM7 = '(10) ' / TTYPE7 = 'LINE_FL3' / entire fieldname = LINE_FLUX_PSIG TUNIT7 = 'nano-Watts/(m^2*sr)' / COMMENT COMMENT Dust Model Parameters and Uncertainties COMMENT COMMENT Dust temperature, in K TFORM8 = '1E ' / TTYPE8 = 'DUST_TEM' / entire fieldname = DUST_TEMP TUNIT8 = 'K ' / COMMENT Sigma of dust temperature, in K TFORM9 = '1E ' / TTYPE9 = 'DUST_TE2' / entire fieldname = DUST_TEMP_SIGMA TUNIT9 = 'K ' / COMMENT Dust optical depth at 1800 GHz TFORM10 = '1E ' / TTYPE10 = 'DUST_TAU' / entire fieldname = DUST_TAU TUNIT10 = ' ' / COMMENT Sigma of dust optical depth at 1800 GHz TFORM11 = '1E ' / TTYPE11 = 'DUST_TA2' / entire fieldname = DUST_TAU_SIGMA TUNIT11 = ' ' / COMMENT Covariance of dust temperature and optical depth TFORM12 = '1E ' / TTYPE12 = 'DUST_COV' / entire fieldname = DUST_COVAR TUNIT12 = ' ' / COMMENT END
