WMAP Foreground Reduced IQU Map Per Frequency Band Five Year FITS Header Information

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

Primary Header

SIMPLE  =                    T /FITS format
BITPIX  =                   16 /Dummy primary header
NAXIS   =                    0 /No data is associated with this header
EXTEND  =                    T /Extensions may (will!) be present
RESOLUTN=                    9 /Resolution Index
PIXTYPE = 'HEALPIX '           /Pixel algorigthm
ORDERING= 'NESTED  '           /Ordering scheme
NSIDE   =                  512 /Resolution Parameter
NPIX    =              3145728 /Number of pixels
FIRSTPIX=                    0 /First pixel (0 based)
LASTPIX =              3145727 /Last pixel (0 based)
COMMENT This file contains WMAP Intensity and Polarization (I, Q, and U)
COMMENT skymaps for the differencing assembly indicated by the DA keyword.
COMMENT
TELESCOP= 'WMAP    '           /Wilkinson Microwave Anisotropy Probe
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /
STOKES  = 'IQU     '           /
RELEASE = 'DR3     '           /WMAP Release
FREQ    = ' band   '           /Frequency band
DATE    = '2008-04-23T12:00:00' //file creation date (YYYY-MM-DDThh:mm:ss UT)
END

Temperature Map Table

XTENSION= 'BINTABLE'           /binary table extension
BITPIX  =                    8 /8-bit bytes
NAXIS   =                    2 /2-dimensional binary table
NAXIS1  =                   16 /width of table in bytes
NAXIS2  =              3145728 /number of rows in table
PCOUNT  =                    0 /size of special data area
GCOUNT  =                    1 /one data group (required keyword)
TFIELDS =                    4 /number of fields in each row
COMMENT
COMMENT  *** End of mandatory fields ***
COMMENT
COMMENT
COMMENT  *** Column names ***
COMMENT
TTYPE1  = 'TEMPERATURE '       /
COMMENT
COMMENT  *** Column formats ***
COMMENT
TFORM1  = 'E       '           /
TUNIT1  = 'mK,thermodynamic'   /
TTYPE2  = 'Q_POLARISATION '    /
TFORM2  = 'E       '           /
TUNIT2  = 'mK,thermodynamic'   /
TTYPE3  = 'U_POLARISATION '    /
TFORM3  = 'E       '           /
TUNIT3  = 'mK,thermodynamic'   /
TTYPE4  = 'N_OBS   '           /
TFORM4  = 'E       '           /
TUNIT4  = 'counts  '           /
EXTNAME = 'Stokes Maps'        /
DATE    =                    0 /
PIXTYPE = 'HEALPIX '           /
ORDERING= 'NESTED  '           /
NSIDE   =                  512 /
FIRSTPIX=                    0 /
LASTPIX =              3145727 /
END

More information concerning the contents of this file is available.