WMAP Foreground Reduced I Map Per Differencing Assembly Single Year FITS Header Information

The maps are contained in a binary table TEMPERATURE and N_OBS columns.

Primary Header

SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                   16 / 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 is defined in 'Astronomy
COMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
DATE    = '2008-01-31T12:00:00' //file creation date (YYYY-MM-DDThh:mm:ss UT)
TELESCOP= 'WMAP    '           /Wilkinson Microwave Anisotropy Probe
OBJECT  = 'ALL-SKY '           / Portion of sky given
EQUINOX =               2000.0 / Equinox of coordinates
COMMENT This file contains a WMAP Intensity (I) Reduced Foreground Res 10
COMMENT skymap for the differencing assembly indicated by the DA keyword.
COMMENT The first year of data went into the map.
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /
PIXTYPE = 'HEALPIX '           / Pixel algorithm
ORDERING= 'NESTED  '           / Ordering scheme
NSIDE   =                 1024 /Resolution Parameter
NPIX    =             12582912 / # of pixels
FIRSTPIX=                    0 /First pixel (0 based)
LASTPIX =             12582911 /Last pixel (0 based)
STOKES  = 'I       '           /
DA      = 'Q1      '           /WMAP Differencing Assembly
FREQ    = 'Q band  '           /Frequency band
RELEASE = 'DR3     '           /WMAP Release
RESOLUTN=                   10 /Resolution Index
END

Temperature Map Table

XTENSION= 'BINTABLE'           /binary table extension
BITPIX  =                    8 /8-bit bytes
NAXIS   =                    2 /2-dimensional binary table
NAXIS1  =                    8 /width of table in bytes
NAXIS2  =             12582912 /number of rows in table
PCOUNT  =                    0 /size of special data area
GCOUNT  =                    1 /one data group (required keyword)
TFIELDS =                    2 /number of fields in each row
COMMENT
COMMENT  *** End of mandatory fields ***
COMMENT
COMMENT
COMMENT  *** Column names ***
COMMENT
TTYPE1  = 'TEMPERATURE '       /label for field   1
COMMENT
COMMENT  *** Column formats ***
COMMENT
TFORM1  = 'E       '           /data format of field: 4-byte REAL
TUNIT1  = 'mK,thermodynamic'   /physical unit of field
TTYPE2  = 'N_OBS   '           /label for field   2
TFORM2  = 'E       '           /data format of field: 4-byte REAL
TUNIT2  = 'counts  '           /physical unit of field
EXTNAME = 'Archive Map Table'  /name of this binary table extension
DATE    = '        '           /file creation date (YYYY-MM-DDThh:mm:ss UT)
PIXTYPE = 'HEALPIX '           /Pixel algorithm
ORDERING= 'NESTED  '           /Ordering scheme
NSIDE   =                 1024 /Resolution parameter
FIRSTPIX=                    0 /First pixel (0 based)
LASTPIX =             12582911 /Last pixel (0 based)
END

More information concerning the contents of this file is available.