FITS Header

Primary Header

SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                    8 / 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    = '2006-10-10'         / FITS file creation date (yyyy-mm-dd)
ORIGIN  = 'LAMBDA  '           /  Legacy Archive for Microwave Background Data
COMMENT                        /   Analysis
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 = 'C-VEC-HPX'          /  C Vector, HEALPix Version
EQUINOX =   2000.0 /  equinox of coords in following tables
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 and LAMBDA.' /
COMMENT     HEALPix specific keywords
PIXTYPE = 'HEALPIX '           / Pixel algorigthm
ORDERING= 'NESTED  '           / Ordering scheme
RESOLUTN=                    4 /Resolution index
NSIDE   =                   16 /Resolution parameter
NPIX    =                 3072 /# of pixels
FIRSTPIX=                    0 /First pixel (0 based)
LASTPIX =                 3071 /Last pixel (0 based)
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)
COMMENT     FIRAS specific keywords
CHANSCAN= 'LOWF    '  /  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 of
COMMENT   / the high frequency RHSS, RHSF, RHLF, LHSS,
COMMENT   / LHSF, and LHLF data.  HIF2, HIF3, and HIF4
COMMENT   / divide the HIGH data into three frequency
COMMENT   / bands, as indicated by the NU_ZERO and
COMMENT   / NUM_FREQ fields.  HRES is a combination of the
COMMENT   / high resolution RLLF and LLLF data.  For the
COMMENT   / uncombined channel/scan mode labels, the first
COMMENT   / two characters of the label indicate the
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 scan
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   /      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
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
GALATEXC=                   15 /  Absolute value of galactic latitude in degrees
COMMENT                        /   below which input data was excluded in
COMMENT                        /   producing this dataset

Extension Header 1

XTENSION= 'BINTABLE'           / Extension type is Binary Table
BITPIX  =                    8 / Binary data
NAXIS   =                    2 / Data are in a table
NAXIS1  =                  728 / 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 =                    1 / Number of fields (columns) in the table
COMMENT    Project Dataset Record Structure
COMMENT    C vector, in MJy/sr
TFORM1  = '182E    '           /
TDIM1   = '(182)   '           /
TTYPE1  = 'C_VECTOR'           /  entire fieldname = C_VECTOR
TUNIT1  = 'MJy/sr  '           /

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HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason