2 GSC2 ivo://archive.stsci.edu/gsc23skynode STScI ASB branch STScI 2.3.1 Charles G. Loomis loomis@stsci.edu Open skyNode Stars catalogs Astrometry photometry The Guide Star Catalog 2 (GSC2) is an all sky multi-wavelength, multi-epoch object catalog based on 1 arcsec resolution scans of photographic sky survey plates from the Palomar and UK Schmidt Telescopes. http://gsss.stsci.edu/Catalogs/GSC/GSC2/GSC2.htm 2 http://gsss.stsci.edu/GSC23Skynode/nodeb.asmx Full 0 0 0 photoprimary objID Optical