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WMAP Far-Sidelobe Maps
FITS Header Information
The data made available through this page has been updated. The most recent version of this data may be accessed through /product/map/current/
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 = '2003-01-14T00:00:00' /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 the MAP antenna sidelobe pattern for differencing COMMENT assembly K1 based on combined ground and in-flight data REFERENC= 'MAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/ VERSION = 'PASS 1 ' / Internal MAP Version DA = 'K1 ' / Differencing Assembly FREQ = 'K band ' / Frequency band RESOLUTN= 7 / Resolution index SKYCOORD= 'Spacecraft coords' / Coordinate system PIXTYPE = 'HEALPIX ' / Pixel algorithm ORDERING= 'NESTED ' / Ordering scheme NSIDE = 128 / Resolution parameter NPIX = 196608 / # of pixels FIRSTPIX= 0 / First pixel (0 based) LASTPIX = 196607 / Last pixel (0 based) END
Extension Header #1
XTENSION= 'BINTABLE' /binary table extension BITPIX = 8 /8-bit bytes NAXIS = 2 /2-dimensional binary table NAXIS1 = 8 /width of table in bytes NAXIS2 = 196608 /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 = 'dimensionless units' /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 = '2003-01-14T00:00:00' /Table/MAP creation date PIXTYPE = 'HEALPIX ' /Pixel algorithm ORDERING= 'NESTED ' /Ordering scheme NSIDE = 128 /Resolution parameter NPIX = 196608 /# of pixels FIRSTPIX= 0 /First pixel (0 based) LASTPIX = 196607 /Last pixel (0 based) COMMENT Temperature field is antenna gain G = 4pi/(beam_solid_angle). COMMENT N_obs is set to 1 for all pixels. The N_obs field COMMENT is filled only to provide consistent map format END
More information concerning the format of this file is available.
