Guide Star Catalog 2.3 Cone Search
The Guide Star Catalog II (GSC-II) is an all-sky optical catalog based on 1" resolution scans of the photographic Sky Survey plates, at two epochs and three bandpasses, from the Palomar and UK Schmidt telescopes. This all-sky catalog will ultimately contains positions, proper motions, classifications, and magnitudes in multiple bandpasses for almost a billion objects down to approximately Jpg=21, Fpg=20. The GSC-II is currently used for HST Bright Object Protection and HST pointing. Looking ahead, the GSC-II will form the basis of the Guide Star Catalog for JWST. This was constructed in collaboration with ground-based observatories for use with the GEMINI, VLT and GALILEO telescopes
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "026:00" ] |
| contactPoint |
{ "fn": "MAST Archive", "@type": "vcard:Contact", "hasEmail": "mailto:archive@stsci.edu" } |
| description | The Guide Star Catalog II (GSC-II) is an all-sky optical catalog based on 1" resolution scans of the photographic Sky Survey plates, at two epochs and three bandpasses, from the Palomar and UK Schmidt telescopes. This all-sky catalog will ultimately contains positions, proper motions, classifications, and magnitudes in multiple bandpasses for almost a billion objects down to approximately Jpg=21, Fpg=20. The GSC-II is currently used for HST Bright Object Protection and HST pointing. Looking ahead, the GSC-II will form the basis of the Guide Star Catalog for JWST. This was constructed in collaboration with ground-based observatories for use with the GEMINI, VLT and GALILEO telescopes |
| distribution |
[ { "@type": "dcat:Distribution", "format": "BIN", "mediaType": "application/octet-stream", "downloadURL": "http://gsss.stsci.edu/Catalogs/GSC/GSC2/GSC2.htm" }, { "@type": "dcat:Distribution", "format": "BIN", "mediaType": "application/octet-stream", "downloadURL": "http://gsss.stsci.edu/webservices/vo/ConeSearch.aspx?CAT=GSC23&" } ] |
| identifier | ivo://archive.stsci.edu/gsc/gsc2.3 |
| keyword |
[ "__" ] |
| landingPage | ivo://archive.stsci.edu/gsc/gsc2.3 |
| license | https://www.usa.gov/government-works |
| modified | 2026-06-22 |
| programCode |
[ "026:000" ] |
| publisher |
{ "name": "MAST: Mikulski Archive at Space Telescope", "@type": "org:Organization" } |
| theme |
[ "Astrophysics" ] |
| title | Guide Star Catalog 2.3 Cone Search |
