FITS Headers
wmap_ilc_rgn_defn_yr1_v1.fits
Primary Header
SIMPLE = T / file does conform to FITS standard BITPIX = 8 / 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 = '2003-06-27T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT) OBJECT = 'ALL-SKY ' / Portion of sky given COMMENT This file defines the sky coordinate boundaries of each of the 12 COMMENT regions used to compute the WMAP Internal Linear Combination (ILC) COMMENT map, numbered from 0-11. For each pixel, the N_OBS field is given the COMMENT value of the region to which it belongs. Weights for each of the COMMENT 5 WMAP frequencies are determined separately for each region. The COMMENT K,Ka,Q,V,W weights used for each region are: COMMENT region 0: 0.10876 -0.68367 -0.09579 1.92141 -0.25072 COMMENT region 1: 0.10818 -0.67987 -0.09017 1.96859 -0.30674 COMMENT region 2: -0.04074 -0.28682 0.08476 1.16221 0.08061 COMMENT region 3: -0.01847 -0.25533 -0.02607 0.83919 0.46068 COMMENT region 4: 0.18610 -0.77416 -0.32352 2.33978 -0.42820 COMMENT region 5: -0.02158 -0.21880 -0.08224 0.84851 0.47412 COMMENT region 6: 0.11790 -0.67740 -0.09117 1.94830 -0.29763 COMMENT region 7: 0.12403 -0.67639 -0.09653 1.74992 -0.10103 COMMENT region 8: 0.10500 -0.68438 -0.09847 1.90588 -0.22803 COMMENT region 9: 0.16911 -0.91455 -0.01204 2.64536 -0.88788 COMMENT region 10: 0.21951 -0.96567 -0.18077 2.38740 -0.46046 COMMENT region 11: 0.11101 -0.67501 0.05268 1.59101 -0.07970 COMMENT COMMENT See the WMAP Explanatory Supplement for further details. REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/ VERSION = 'PASS 1 ' / Internal MAP Version RESOLUTN= 9 / Resolution index SKYCOORD= 'Galactic' / Coordinate system 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) END
Archive 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 = 3145728 /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 TTYPE1 = 'TEMPERATURE' /label for field 1 TFORM1 = '1E ' /data format of field: 4-byte REAL TUNIT1 = 'mK, thermodynamic' /physical unit of field TTYPE2 = 'N_OBS ' /label for field 2 TFORM2 = '1E ' /data format of field: 4-byte REAL TUNIT2 = 'counts ' /physical unit of field EXTNAME = 'Archive Map Table' /name of this binary table extension DATE = '2003-06-27T00:00:00' /Table creation date PIXTYPE = 'HEALPIX ' /Pixel algorithm ORDERING= 'NESTED ' /Ordering scheme NSIDE = 512 /Resolution parameter FIRSTPIX= 0 /First pixel (0 based) LASTPIX = 3145727 /Last pixel (0 based) COMMENT The TEMPERATURE field is set to 0 for all pixels. COMMENT N_obs defines the ILC regions 0-11. Each pixel value corresponds COMMENT to the numerical value of the region to which the pixel belongs. END
