Positions of stars in regions of 14 southern galactic clusters

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astrometry, Astronomical Coordinates, Galactic Clusters, Optical Correction Procedure, Schmidt Telescopes, Star Distribution, Astronomical Catalogs, Astronomical Photography, Celestial Reference Systems

Scientific paper

Positions for a total of 3487 stars, scattered over 14 regions, have been determined using the Danish 1.5-m telescope at La Silla. The 14 regions are centred on one of the southern galactic clusters NGC 1981, 2287, 2437, 2451, 2516, 2546, 2547, 2548, 3114, 3532, IC 2391, 2395, 2602 and Trümpler 10. A description of the applied field corrector is given and the reduction of plate measurements is described in detail. Based on three 1.5-m plates for each region, taken on different nights, an internal mean error in one plate position in the range 0.030 to 0.048 seconds of arc has been derived.

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