VizieR

If the access to catalogues with VizieR was helpful for your research work,the following acknowledgment would be appreciated: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier). The original description of the VizieR service was published in A&AS 143, 23

Target Name (resolved by Sesame) or Position:	Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)	Radius Box size

	I/254	438853		The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996) ReadMe+ftp 2001AJ....121.1752M Similar Catalogs Post annotation
1.	I/254/out		The Full Catalogue (25241730 positions) (25241730 rows) metaI/254/out
			The Guide Star Catalog has been constructed to support the operational need of the Hubble Space Telescope. It contains over 25 million positions for about 19 million objects, of which more than 15 million are classified as stars. The version 1.2 is a new astrometric reduction which results in absolute position errors about 0.3-0.4 arcsec. (see GSC pages at URL http://www-gsss.stsci.edu/gsc/gsc.html)

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