Guide Star Catalog 1.1 Cone Search

Published by MAST: Mikulski Archive at Space Telescope | National Aeronautics and Space Administration | Metadata Last Checked: September 14, 2025 | Last Modified: 2025-09-10

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.

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Complete Metadata

bureauCode	[ "026:00" ]
identifier	ivo://archive.stsci.edu/gsc/gsc1.1
landingPage	http://gsss.stsci.edu/Catalogs/GSC/GSC1/GSC1.htm
programCode	[ "026:000" ]
theme	[ "Astrophysics" ]