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Contents, Test Results, and Data Availability for GSC 1.2

Published online by Cambridge University Press:  25 May 2016

S. Röser ,
J. Morrison ,
B. Bucciarelli ,
B. Lasker  and
B. McLean
S. Röser
Affiliation:
Astronomisches Rechen-Institut, Heidelberg, Germany
J. Morrison
Affiliation:
Astronomisches Rechen-Institut, Heidelberg, Germany
B. Bucciarelli
Affiliation:
Osservatorio Astronomico di Torino, Italy
B. Lasker
Affiliation:
Space Telescope Science Institute
B. McLean
Affiliation:
Space Telescope Science Institute

Extract

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A collaboration between STScI and ARI has produced a new astrometric reduction of the Guide Star Catalog (GSC, Lasker et al. 1990). This new version, GSC 1.2, has dramatically reduced the systematic errors present in GSC 1.1. The positions in GSC 1.1 are affected by plate-based systematic distortions which are largest at the plate edges (1.0″, north; 1.2″, south) (Taff et al. 1990a). These positions also suffer from systematic errors which are a function of magnitude and radial distance from the plate center (Morrison et al. 1996). This effect is small for radii under 2.7° from the plate center, then rapidly increases producing an average offset of the faint stars (15m) versus the reference stars (10m) of 0.9″ at the plate edges.

Type
Part 8. Catalogues
Information
Symposium - International Astronomical Union , Volume 179: New Horizons from Multi-Wavelength Sky Surveys , 1998 , pp. 420 - 421
Copyright
Copyright © Kluwer 1998 

References

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Röser, S., Bastian, U., and Kuzmin, A. V. 1995, IAU Colloquium 148, ed. Chapman, J. M. et al.CrossRefGoogle Scholar
Taff, L. G., et al. 1990a, Astrophys. J., 353, L45.CrossRefGoogle Scholar
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