SIMPLE = T BITPIX = 16 NAXIS = 2 NAXIS1 = 721 NAXIS2 = 721 OBJECT = 'NGC 3031 ' FILTER = 'GC1 (4805/75)'/ 3 inch filter RA = '09:51:29.90' DEC = '+69:18:20.1' AIRMASS = 1.314783E+00 HISTORY 'Flat-fielded, star-subtracted, calibrated, header-corrected ' TELESCOP= 'Palomar 1.5' INSTRUME= 'Wide field' OBSERVER= 'J. E. Gunn' AUTHOR = 'Z. Frei et al. ' REFERENC= 'AJ, 1995, in press ' DATE = '12/07/95 ' EQUINOX = 1.950000E+03 BUNIT = 'COUNTS ' HA = '-02:16:36.4' / Hour Angle LST = ' 12:11:32.6' / Sidereal Time TIME = '05:08:39.3' FILENUM = 31 DECORDER= F BSCALE = 1.000000E+00 BZERO = 0.000000E+00 CRVAL1 = 1.478708E+02 CRVAL2 = 6.930556E+01 CRPIX1 = 3.640000E+02 CRPIX2 = 3.620000E+02 CDELT1 = -3.305555E-04 CDELT2 = 3.305555E-04 CTYPE1 = 'RA---TAN ' CTYPE2 = 'DEC--TAN ' DATAMAX = 2.354700E+04 DATAMIN = 5.400000E+01 CCDNUM = 1 EXPOSURE= 6.000000E+01 FILENAME= 'n3031_pr.fits' FILTER1 = 'r ' SKY = 6.700494E+02 SKYSIG = 1.917900E+01 XOFFSET = 62 YOFFSET = 42 G_CENT_X= 363 G_CENT_Y= 361 SATURAT = 2 DNAT0_ST= 7.165400E+10 DNAT0_BV= 5.118446E+10 B_RC3 = 7.890000E+00 B-V_RC3 = 9.500000E-01 PSF_FWHM= 2.513180E+00 PA_RC3 = 1.570000E+02 BOA_RC3 = 2.800000E-01 SIZE_RC3= 2.430000E+00 VELO_RC3= -3.745674E+01 TYPE_RC3= '.SAS2.. 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