USNO-B http://ledas-svc.star.le.ac.uk/blasta/usnobhelp.php USNOFS Image and Catalogue Archive operated by the United States Naval Observatory, Flagstaff Station USNOFS USNOFS PMM project USNO-B1.0 is an all-sky catalog that presents positions, proper motions, magnitudes in various optical passbands, and star/galaxy estimators for 1,042,618,261 objects derived from 3,643,201,733 separate observations. The data were obtained from scans of 7,435 Schmidt plates taken for the various sky surveys during the last 50 years. USNO-B1.0 is believed to provide all-sky coverage, completeness down to V = 21, 0.2 arcsecond astrometric accuracy at J2000, 0.3 magnitude photometric accuracy in up to five colors, and 85% accuracy for distinguishing stars from non-stellar objects. USNOFS PMM project 2002-11-14 B1.0 http://www.nofs.navy.mil/data/FchPix/cfhelp.html#cat Dr David Monet dgm@nofs.navy.mil 80000 NaN 1045913669 51 CLASS_STAR/GALAXY CODE_MISC ERROR FIT_ERROR ID_ALTERNATIVE ID_FIELD ID_MAIN ID_SURVEY INST_CALIB_PARAM NUMBER PHOT_PHG_B PHOT_PHG_I PHOT_PHG_R POS_EQ_DEC_MAIN POS_EQ_DEC_OFF POS_EQ_PMDEC POS_EQ_PMRA POS_EQ_RA_MAIN POS_EQ_RA_OFF STAT_PROBABILITY TIME_EPOCH survey ICRS 0 -90 360 90 ICRS NaN NaN NaN ICRS NaN NaN NaN NaN NaN NaN ICRS NaN ICRS 1 infrared optical N R B NaN 0.39e+06 11.0e+06 1949-01-01T00:00:00 2002-12-12T23:59:59 14e-06 2543 1045913669 0.12 0.16 3e+06 0.2 0.2 3e+06 research amateur university informalEducation USNOFS PMM project POSS-I POSS-II SERC-J ESO-J SERC-I asciiText public http://ledas-svc.star.le.ac.uk/blasta/blasta.php http://ledas-svc.star.le.ac.uk/blasta/blasta.php text/plain text/html 180 360 INF