BITPIX = -32 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 4095 / length of data axis 1 NAXIS2 = 4095 / length of data axis 2 BUNIT = 'DN ' / image pixel units COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H CRVAL1 = 271.305017 / RA at CRPIX1,CRPIX2, J2000.0 (deg) CRVAL2 = -30.288889 / Dec at CRPIX1,CRPIX2, J2000.0 (deg) EQUINOX = 2000.0 / Equinox of WCS, (year) CTYPE1 = 'RA---SIN' / Projection type for axis 1 CTYPE2 = 'DEC--SIN' / Projection type for axis 2 CRPIX1 = 2048.000000 / Axis 1 reference pixel at CRVAL1,CRVAL2 CRPIX2 = 2048.000000 / Axis 2 reference pixel at CRVAL1,CRVAL2 CDELT1 = -0.0003819444391411 / Axis 1 scale at CRPIX1,CRPIX2 (deg/pix) CDELT2 = 0.0003819444391411 / Axis 2 scale at CRPIX1,CRPIX2 (deg/pix) CROTA2 = 0.000000 / Image twist: +axis2 W of N, J2000.0 (deg) HISTORY AWAIC: A WISE Astronomical Image Coadder; Vsn 5.1 BITMASK = 405273647 / Fatal bitstring mask template WRELEASE= 'release-v6.0' / WSDS s/w release tag FILETYPE= 'intensity image' / product description ORIGIN = 'WISE Science Data Center, IPAC, Caltech' / origin of image data FCREATE = '2013-07-06T20:07:53.000Z' / WSDC file creation date/time (UTC) DATEOBS1= '2010-03-20T22:30:33.913' / obs. date/time of earliest frame (UTC) DATEOBS2= '2010-09-21T14:11:43.369' / obs. date/time of latest frame (UTC) MIDOBS = '2010-09-19T03:27:36.043' / obs. date/time of middle frame (UTC) TELESCOP= 'WISE ' / telescope used to acquire data BAND = 1 / wavelength band number WAVELEN = 3.368 / [microns] effective wavelength of band COADDID = '2713m303_ac51' / atlas-image identifier NUMFRMS = 223 / final number of frames touching footprint MOONREJ = 3 / number of frames rejected due to moon-glow MOONINP = 3 / initial number of frames with suspect moon-glow MAGZP = 20.5 / [mag] relative photometric zero point MAGZPUNC= 0.006 / [mag] 1-sigma uncertainty in zero point SIZEX = 1.564444 / [deg] linear dimension along axis 1 SIZEY = 1.564444 / [deg] linear dimension along axis 2 PXSCAL1 = 1.375 / [asec/pix] scale at CRPIX1,CRPIX2 for axis1 PXSCAL2 = 1.375 / [asec/pix] scale at CRPIX1,CRPIX2 for axis2 MEDINT = 73.876953125 / [DN] median of intensity pixels MEDCOV = 23.248046875 / [pixels] median depth-of-coverage MINCOV = 0 / [pixels] minimum depth-of-coverage MAXCOV = 29.009765625 / [pixels] maximum depth-of-coverage LOWCOVPC= 0.0483749055177627 / [%] area of footprint with depth <= 4 pixels LOWCOPC = 0.0806367692814579 / [%] area of footprint with depth <= 6 pixels NOMCOVPC= 0.124050146028168 / [%] area of footprint with depth <= 8 pixels PCTMINC = 4.6E-05 / [%] area of internal outlier tile <= 4 pix deep ROBSIG = 4.66322662740479 / [DN] robust spatial sigma at MEDCOV +/- 0.25 PIXCHIS1= 26.4871919096551 / ratio ROBSIG/(median unc) at MEDCOV +/- 0.25 PIXCHIS2= 30.0087608261587 / ratio ROBSIG/(modal unc) at MEDCOV +/- 0.25 MEDNMSK = 44512 / median number of pixels masked per frame RANDSEED= -999 / random seed for outlier step [-999=>not used] ELON = 271.134962303537 / [deg] Ecliptic longitude at image center ELAT = -6.85473907646948 / [deg] Ecliptic latitude at image center GLON = 0.975527205832547 / [deg] Galactic longitude at image center GLAT = -4.3614880257035 / [deg] Galactic latitude at image center MOONMASK= '/wise/fops/ref/coadd/wise-w1-moonmask.fits' / Moon mask - = '2713m303_ac51-w1-int-3.fits' / atlas image (coadd) filename FLXWTNUM= 3874 / number of sources used to compute centroids FLXWTDX = 0.0291539 / [arcsec] mdex - flux-weighted centroid along X FLXWTUDX= 0.0301293 / [arcsec] 1-sigma uncertainty in flxwtdx FLXWTSDX= 0.9676279 / signal-to-noise ratio in flxwtdx FLXWTDY = 0.0756675 / [arcsec] mdex - flux-weighted centroid along Y FLXWTUDY= 0.0299443 / [arcsec] 1-sigma uncertainty in flxwtdy FLXWTSDY= 2.5269451 / signal-to-noise ratio in flxwtdy END