FITS Headers
map_q2_beam_maps_yr1_v1.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 = 250 / in-scan axis NAXIS2 = 250 / 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 = '2003-01-28T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT) TELESCOP= 'MAP ' / Microwave Anisotropy Probe OBJECT = 'JUPITER ' / Beam maps of Jupiter COMMENT This file contains beam maps constructed from sightings of Jupiter COMMENT during the first year of MAP observations. Data here are for the COMMENT differencing assembly indicated by the DA keyword. The contents of the COMMENT four 250x250 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 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= 'MAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/ VERSION = 'PASS 1 ' / Internal MAP Version STARTGMT= '20012720000000000000' / Start time of TOD used ENDGMT = '20020952359000000000' / End time of TOD used DA = 'Q2 ' / Differencing Assembly STOKES = 'Intensity' / i, q, or u GALMASK = '/map/data/flight/pass1/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 = -4.9800000 / 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 = -4.9800000 / 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
