Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985baicz..36..289r&link_type=abstract
Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 36, Sept. 1985, p. 289-300.
Astronomy and Astrophysics
Astronomy
8
Astrometry, Position (Location), Stellar Motions, Astronomical Catalogs, Tables (Data)
Scientific paper
The observations of 305 stars made in the period from 1973 to 1983 with the PZT at Ondřejov were combined with the positions of the same stars in the catalogues AGK 2 and AGK 3 in order to obtain their mean positions and proper motions. Within the period in question more than 32 thousand star transits on 1140 nights were observed with the PZT; the average mean errors in right ascension and declination of a star that was observed throughout the whole period are ±0.0019s and ±0.020arcsec in the epoch around 1979 and they will increase to ±0.0055s and ±0.059arcsec in 2000. The proper motions in right ascension and declination are derived with average mean errors of ±0.024scy-1 and ±0.26arcseccy-1. The new catalogue has been used regularly to reduce PZT observations at Ondřejov since the beginning of 1985.
Ron Cyril
Vondrák Jan
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