========================================================================== I/22A CARTE DU CIEL CATALOGUE (ASTROGRAPHIC CATALOGUE) ==========================================================================
drwxr-xr-x 277 cats archive 4096 Mar 12 11:23 [Up] drwxr-xr-x 2 cats archive 4096 May 12 09:53 [TAR file] -rw-r--r-- 1 cats archive 206 Sep 10 1996 .message -r--r--r-- 1 cats archive 4723 Feb 21 1996 ReadMe -r--r--r-- 1 cats archive 6780324 Sep 9 1993 catalog.gz [Uncompressed]
Beginning of ReadMe : I/22A Astrographic Catalogue (AC), -02/+04deg (Lacroute+ 1981) ================================================================================ Astrographic Catalogue: Alger zone Lacroute P., Valbousquet A. <Bull. Inform. CDS 6 (1974)> =1974BICDS...6...38L Valbousquet A. <Bull. Inform. CDS 13, 2 (1977)> =1977BICDS..13....2V Lacroute P. <Bull. Inform. CDS 21, 2 (1981)> =1981BICDS..21....2L ================================================================================ ADC_Keywords: Positional data ; Astrographic zones ; Magnitudes, photographic Description: 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. Data completeness: Incompletenesses of the data are as follows: (1) The latter half of the data of zone +04 is missing. (2) Declination values for negative declination zones have different expres sions details of which are unknown. (3) X,Y coordinate values are attached but are different from those values published by Alger observatory.