FITS Headers
wmap_forered_iqumap_r9_yr4_W2_v5.fits
Primary Header
SIMPLE = T /FITS format BITPIX = 32 /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 FIRSTPIX= 0 /First pixel (0 based) LASTPIX = 3145727 /Last pixel (0 based) COMMENT This file contains a foreground cleaned WMAP Intensity (I) Res 9 skymap COMMENT for the differencing assembly indicated by the DA keyword. COMMENT The fourth year of data went into the map. DATE = '2013-06-03T21:00:00' /file creation date (YYYY-MM-DDthh:mm:ss UT) TELESCOP= 'WMAP ' /Wilkinson Microwave Anisotropy Probe REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' / STOKES = 'IQU ' / DA = 'W2 ' /WMAP Differencing Assembly FREQ = 'W band ' /Frequency band RELEASE = 'DR5 ' /WMAP Release SIGMA0_I= 6.56220 / SIGMA0_P= 6.85000 / COMMENT Pixel noise in mK may be evaluated from the Nobs field using COMMENT the expression: COMMENT sigma = sigma0/sqrt(Nobs) COMMENT sigma0 applies to the entire map and is a scalar value listed COMMENT in the header. END
Stokes Maps
XTENSION= 'BINTABLE' /Binary table written by MWRFITS v1.10 BITPIX = 8 /Required value NAXIS = 2 /Required value NAXIS1 = 16 /Number of bytes per row NAXIS2 = 3145728 /Number of rows PCOUNT = 0 /Normally 0 (no varying arrays) GCOUNT = 1 /Required value TFIELDS = 4 /Number of columns in table COMMENT COMMENT *** End of mandatory fields *** COMMENT COMMENT COMMENT *** Column names *** COMMENT TTYPE1 = 'TEMPERATURE' / TTYPE2 = 'Q_POLARISATION' / TTYPE3 = 'U_POLARISATION' / TTYPE4 = 'N_OBS ' / COMMENT COMMENT *** Column formats *** COMMENT TFORM1 = 'E ' / TFORM2 = 'E ' / TFORM3 = 'E ' / TFORM4 = 'E ' / TUNIT1 = 'mK,thermodynamic' / TUNIT2 = 'mK,thermodynamic' / TUNIT3 = 'mK,thermodynamic' / TUNIT4 = 'counts ' / EXTNAME = 'Stokes Maps' / 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 COMMENT COMMENT *** End of mandatory fields *** COMMENT COMMENT COMMENT *** Column names *** COMMENT TTYPE1 = 'N_OBS ' / COMMENT COMMENT *** Column formats *** COMMENT TFORM1 = 'E ' / TUNIT1 = 'counts ' / TTYPE2 = 'QQ ' / TFORM2 = 'E ' / TUNIT2 = 'counts ' / TTYPE3 = 'QU ' / TFORM3 = 'E ' / TUNIT3 = 'counts ' / TTYPE4 = 'UU ' / TFORM4 = 'E ' / TUNIT4 = 'counts ' / EXTNAME = 'Weight Arrays' / DATE = 0 / 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
