FITS Headers
wmap_da_smth_iqumap_r9_7yr_W4_v4.fits
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 = '2009-08-26T18:24:42' /file creation date (YYYY-MM-DDThh:mm:ss UT) TELESCOP= 'MAP ' / Microwave Anisotropy Probe OBJECT = 'ALL-SKY ' / Portion of sky given EQUINOX = 2000.0 / Equinox of coordinates COMMENT This file contains WMAP Intensity and Polarization (I, Q, and U) COMMENT Res 9 skymaps for the differencing assembly indicated by COMMENT the DA keyword. COMMENT Seven years of data went into the map REFERENC= 'MAP Explanatory Supplement' PIXTYPE = 'HEALPIX ' / Pixel algorithm ORDERING= 'NESTED ' / Ordering scheme NSIDE = 512 / Resolution parameter NPIX = 3145728 / # of pixels FIRSTPIX= 0 / First pixel (0 based) LASTPIX = 3145727 / Last pixel (0 based) TELESCOP= 'WMAP ' /Wilkinson Microwave Anisotropy Probe OBJECT = 'ALL-SKY ' / Portion of sky given EQUINOX = 2000.0 / Equinox of coordinates REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' / PIXTYPE = 'HEALPIX ' / Pixel algorithm 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) STOKES = 'IQU ' / DA = 'V1 ' /WMAP Differencing Assembly FREQ = 'V band ' /Frequency band RELEASE = 'DR4 ' /WMAP Release RESOLUTN= 9 /Resolution Index END
Stokes Maps
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 TTYPE1 = 'TEMPERATURE ' / 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 = '2009-08-26T14:24:41' / PIXTYPE = 'HEALPIX ' / ORDERING= 'NESTED ' / NSIDE = 512 / FIRSTPIX= 0 / LASTPIX = 3145727 / END
Weight Arrays
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 TTYPE1 = 'N_OBS ' / TFORM1 = 'E ' / TTYPE2 = 'QQ ' / TFORM2 = 'E ' / TUNIT2 = 'counts ' / TTYPE3 = 'QU ' / TFORM3 = 'E ' / TUNIT3 = 'counts ' / TTYPE4 = 'UU ' / TFORM4 = 'E ' / TUNIT4 = 'counts ' / EXTNAME = 'Weight Arrays' / DATE = '2009-08-26T14:24:41' / PIXTYPE = 'HEALPIX ' / ORDERING= 'NESTED ' / NSIDE = 512 / FIRSTPIX= 0 / LASTPIX = 3145727 / COMMENT Weight arrays must be divided by a scaling factor sigma_0^2 COMMENT to provide a weight array in physical units (mK^-2). See WMAP COMMENT Explanatory Supplement. END
