FITS Headers
wmap_forered_qumap_r4_3yr_V_v2p1.fits
Primary Header
SIMPLE = T /FITS format BITPIX = 8 /Dummy primary header NAXIS = 0 /No data is associated with this header EXTEND = T /Extensions may (will!) be present RESOLUTN= 4 /Resolution index PIXTYPE = 'HEALPIX ' /Pixel algorigthm ORDERING= 'NESTED ' /Ordering scheme NSIDE = 16 /Resolution parameter FIRSTPIX= 0 /First pixel (0 based) LASTPIX = 3071 /Last pixel (0 based) NPIX = 3072 /Number of pixels. DATE = '2006-09-19T19:29:41' /file creation date (YYYY-MM-DDThh:mm:ss UT) TELESCOP= 'WMAP ' /Wilkinson Microwave Anisotropy Probe COMMENT This file contains WMAP Polarization (Q and U) skymaps for the COMMENT frequency band indicated by the FREQ keyword. The TEMPERATURE COMMENT and N_OBS columns need to be there for the HEALPix software; COMMENT however they are filled with zeros. COMMENT A foreground model has been removed from the polarization maps. COMMENT The map was constructed by coadding three single year maps. COMMENT A small effect due to transmission imbalance between radiometers COMMENT has been projected out of the inverse variances matrices as described COMMENT in Jarosik, et.al. (2007) REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' / STOKES = 'QU ' / RELEASE = 'DR2 ' /WMAP Release FREQ = 'V band ' /Frequency band 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 = 3072 /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 ' /label for field 1 TFORM1 = 'E ' /data format of field: 4-byte REAL TUNIT1 = 'mK ' /physical unit of field 1 TTYPE2 = 'Q_POLARISATION ' /label for field 2 TFORM2 = 'E ' /data format of field: 4-byte REAL TUNIT2 = 'mK,thermodynamic' /physical unit of field 2 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 = 16 / FIRSTPIX= 0 / LASTPIX = 3071 / END
