FITS Headers
wmap_w1_hybrid_beam_maps_3yr_v2.fits
Primary Header
SIMPLE = T / file does conform to FITS standard BITPIX = -32 / number of bits per data pixel NAXIS = 3 / number of data axes NAXIS1 = 600 / in-scan axis NAXIS2 = 600 / cross-scan axis NAXIS3 = 4 / array id index 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 = '2006-01-25T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT) TELESCOP= 'WMAP ' / Wilkinson Microwave Anisotropy Probe OBJECT = 'JUPITER ' / Beam maps of Jupiter COMMENT This file contains hybrid beam maps constructed from data supplemented COMMENT with model predictions for the low signal-to-noise pedestals. Data COMMENT consist of sightings of Jupiter during the first 3 years of WMAP COMMENT observations. Model predictions were substituted for data at the COMMENT 17,17,18,19 and 20 dBi levels of K,Ka,Q,V and W, respectively. COMMENT The hybrid beams provided in this file are for the COMMENT differencing assembly indicated by the DA keyword. The contents of the COMMENT four 600x600 arrays are identified as follows from the CTYPE3 value: COMMENT 1 = beam map for Side A, in mK, antenna temperature COMMENT 2 = statistical noise for each side A pixel, in mK, antenna temp. COMMENT 3 = beam map for Side B, in mK, antenna temperature COMMENT 4 = statistical noise for each side B pixel, in mK, antenna temp. COMMENT Beam data are provided out to roughly 9.0, 6.5, 5.0, 2.5 and 2.5 COMMENT degrees from beam center for K, Ka, Q, V and W bands respectively. COMMENT Pixels with no coverage have values of zero. Beam response has not COMMENT been corrected for the input transmission imbalance (A/B asymmetry). COMMENT Origin of the focal plane coordinates [Xbeam,Ybeam] is the primary COMMENT optic axis for either the A or B side; the individual antenna feeds COMMENT are clustered about this axis. REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/ RELEASE = 'DR2 ' / WMAP Release VERSION = 'PASS 2 ' / Internal WMAP Version STARTGMT= '20012690000000000000' / Start time of TOD used ENDGMT = '20031302359000000000' / End time of TOD used DA = 'W1 ' / Differencing Assembly STOKES = 'Intensity' / i, q, or u GALMASK = '/map/data/flight/pass2/ref/alt_mask_K_p2_v2_src.fits' / Galaxy mask SHIELDS = 'S ' / Shield angle avoidance COMMENT Shield codes: [S]un, [E]arth, [M]oon COMMENT CRVAL1 = -11.9800000 / Value at first pixel (degrees) CRPIX1 = 1 / position of first pixel CTYPE1 = 'Xbeam' / in-scan coordinate; range +-5 degrees CDELT1 = 0.0400000 / in-scan bin increment, degree per pixel COMMENT CRVAL2 = -11.9800000 / Value at first pixel (degrees) CRPIX2 = 1 / position of first pixel CTYPE2 = 'Ybeam' / cross-scan coordinate, range +-5 degrees CDELT2 = 0.0400000 / x-scan bin increment, degree per pixel COMMENT CRVAL3 = 1 / CRPIX3 = 1 / CTYPE3 = 'Array id' / identifier specifying contents of 4 map arrays CDELT3 = 1 / COMMENT END
