Data.gov Catalog
Guide Star Photometric ConeSearch
Published by MAST: Mikulski Archive at Space Telescope
About this dataset
The Guide Star Catalog (GSC) is a star catalog compiled to support the Hubble Space Telescope with targeting off-axis stars. \nGSC-II contains 945,592,683 stars out to magnitude 21. \nPhotometric calibrations for GSC2 are available through this interface.\n\nAll available catalogs are listed at http://archive.stsci.edu/vo/mast_services.html.