Comparison of the declination systems of the General Catalogue Observed with Photoelectric Astrolabes of China and five modern meridian catalogues

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astrolabes, Astrometry, Astronomical Catalogs, Astronomical Photometry, Electrophotometry, China, Position (Location)

Scientific paper

The declination systems of the General Catalogue Observed with Photoelectric Astrolabes of China (GCPA) and five meridian catalogues published recently are estimated. The result shows that astrolabe catalogues can be used to improve fundamental catalogues and, compared with meridian catalogues, have some strong points. Among these six catalogues, both systematic and random precisions of GCPA star positions are excellent. Some deficiencies of meridian astronomy are also discussed.

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