Selecting a reference catalog for reduction of the 'Carte DU Ciel' plates

Details Selecting a reference catalog for reduction of the 'Carte DU Ciel' plates Selecting a reference catalog for reduction of the 'Carte DU Ciel' plates

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997azh....74..342k&link_type=abstract

Astronomicheskij Zhurnal, vol. 74, p. 342

Astronomy and Astrophysics

Astronomy

Astronomical Catalogs, Stellar Motions, Astronomical Maps, Astrography, Astronomical Photography, Astronomical Spectroscopy, Star Distribution, Root-Mean-Square Errors

Scientific paper

Systematic differences between the ACRS and PPM catalog proper motions, which exceed 0.5 arcsec/100 yr for some declination zones, are discussed. Some of these differences are likely due to errors in the PPM. It is proposed to reduce the Astrographic Catalog (AC) plates obtained as part of the international Carte du Ciel project using the ACRS as a reference catalog, since the ACRS is independent of the AC and has lower systematic proper motion errors.

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