2 GSC11 ivo://archive.stsci.edu/gsc/gsc1.1 Space Telescope Science Institute Archive Space Telescope Science Institute Catalogs and Surveys Branch 2.3.2 STScI Archive archive@stsci.edu Observational astronomy Surveys The GSC-I catalog is an all-sky catalog of positions and magnitudes for approximately 19 million stars and other objects in the sixth to fifteenth magnitude range. The GSC is primarily based on an all-sky, single-epoch collection of Schmidt plates. For centers at +6 degrees and north, a 1982 epoch "Quick V" survey was obtained from the Palomar Observatory, while for southern fields, materials from the UK SERC J survey (epoch = 1975) and its equatorial extension (epoch = 1982) were used. http://gsss.stsci.edu/Catalogs/GSC/GSC1/GSC1.htm Catalog Research 2 http://gsss.stsci.edu/webservices/vo/ConeSearch.aspx?CAT=GSC11& GET 1 1000 false 21 42 0.01 Optical