Free Access
Astron. Astrophys. Suppl. Ser.
Volume 119, Number 2, October_II 1996
Page(s) 307 - 320
Published online 15 October 1996
M15, an astrometric standard for CCD observations DOI: 10.1051/aas:1996247

Astronomy and Astrophysics Supplement Series, Vol. 119, October II 1996, 307-320

M15, an astrometric standard for CCD observations

J.-F. Le Campion , J. Colin and M. Geffert

Send offprint requests to: J. Colin

Observatoire de Bordeaux, URA 352, CNRS/INSU, F-33270 Floirac, France
Sternwarte der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany

Received May 4, 1995; accepted March 7, 1996


CCD observations of stars in the region of the globular cluster M15 have been used to obtain astrometric positions of 1092 stars in the central part of the cluster within the FK5 system. The purpose of this catalogue is to calibrate astrometrically CCD observations by means of measuring the positions of stars in M15. The comparison with other catalogues and with measurements of photographic plates of the central part of M15 indicates a mean accuracy of about 50 to 70 mas for each star of our catalogue.

Key words: astrometry --- globular clusters: M15

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