1022A I/22A Astrographic Catalogue Algier, -02 to +04 P Lacroute A Valbousquet CDS Bull. No. 6, p. 38 ??? ??? 1974 1974BICDS...6...38L Positional data Astrographic zones Magnitudes, photographic The "Carte de Ciel" (or "Astrographic Catalogue") is a catalogue of star positions and magnitudes, determined on the photographic plates taken by the normal astrographs which are installed in observatories of various latitudes, as a world-wide astronomical project (see Eichhorn, 1974, p279). The catalogue is divided into 22 declination zones, each of which is assigned to each observatory, e.g., a zone from +18 to +24 degrees is to Paris observatory. Each observatory has taken photographs of 2 deg x 2 deg area in and covering each zone, measured the X,Y coordinates of star images on the photographic plates, and published the results as the printed catalogues. The present catalogue is the results of reduction of these X,Y coordinates into right ascension and declination values, for declination zones of +05 to +31, by using AGK2/3 catalogue as the reference.

ZONE plate identifier declination zone, or the declination of the center of each astrographic plate deg PLATE plate identifier running number of plate in the zone Note that this number is negative when the zone is negative. --- STAR running number of star on the plate number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. --- RAmas right ascension (B1950) number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. mas DEmas declination (B1950) number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. mas EPOCH plate epoch from 180000 number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. ca mB photographic magnitude number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. dmag X X coordinate on the plate number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. 0.1um Y Y coordinate on the plate number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. 0.1um AGK3Z AGK3 number : zone number No signs on any AGK3 zones. number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. deg AGK3N AGK3 number : star number number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. --- ZERO zero number= declination zone, or the declination of the center of each astrographic plate number= running number of plate in the zone Note that this number is negative when the zone is negative. number= No signs on any AGK3 zones. --- Koichi Nakajima CDS 1993 J.A. Watko [SSDOO/ADC] 21-Feb-1996Sep24 I_22A.xml