http://arxiv.org/abs/1705.05434
This optical catalogue combines the all-sky USNO-B1.0/A1.0 and most-sky APM catalogues, plus overlays of SDSS optical data, into a single all-sky map presented in a sparse binary format which is easily downloaded at 9Gb zipped. Total count is 1,163,237,190 sources and each has J2000 astrometry, red & blue magnitudes with PSFs and variability indicator, and flags for proper motion, epoch, and source survey & catalogue for each of the photometry and astrometry. The catalogue is available on the PASA datastore at this http URL .
E. Flesch
Wed, 17 May 17
1/65
Comments: Accepted by Publications of the Astronomical Society of Australia (PASA). 13 pages, 15 figures, 2 tables. Catalog available at this http URL