Astron. Astrophys. Suppl. Ser. 132, 275-279

Reduction of the Astrographic Catalogue, zone of S. Fernando

C. Abad¹ - K. Vieira² - A. Zambrano³

Send offprint request: C. Abad

1 - Centro de Investigaciones de Astronomía CIDA, 5101-A Mérida, Venezuela
2 - Universidad Centro-Occidental Lisandro Alvarado UCLA, Barquisimeto, Venezuela
3 - Real Instituto y Observatorio de la Armada de S. Fernando R0A, 11100 S. Fernando, (Cádiz) Spain

Received March 26; accepted April 24, 1998

Abstract:

The San Fernando Zone of the Astrographic Catalogue is reduced to the HIPPARCOS system in order to test a reduction model previously presented by Abad (1993). A new method for the determination of field distortion and magnitude or color dependent systematic errors on photographic plates is discussed.

Key words: astrometry -- catalogs