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I/154 Astrographic Catalogue, Zones -02 to +31 degrees (Roeser 1990)
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Astrographic Catalogue, Zones -02 to +31 degrees Right Ascension and
Declination Files
Roeser S.
<Astronomisches Rechen-Institut, Heidelberg, 1990>
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ADC_Keywords: Astrometric data
Description:
The "Astrographic Catalogue" (or "Carte de Ciel") 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.
A part of this catalogue, i.e., zones from -02 to +31 degrees, was once
recompiled by using AGK2/3 catalogue as the reference (Lacroute 1981),
and is already archived in CDS as catalogues I/21 and 22.
The present catalogue gives the result of recalculation of the same zones,
by using AGK3 catalogue (printed Hamburg version) as the reference.
Note that since the content of stars per plate has not been checked, there
may be some entries missing.
The participated observatories and the archived files are as follows:
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declination zone observatory file
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-02 to +04 Algiers f1
+05 to +10 Toulouse f2
+11 to +17 Bordeaux f3
+18 to +24 Paris f4
+25 to +31 Oxford I f5
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Note that +11 degree zone is also observed by Toulouse, and the results
are included in the file f2 .
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
f1.dat 57 330449 Algiers zone (-02,-01,+00,+01,+02,+03,+04)
f2.dat 57 433081 Toulouse zone (+05 to +10 and +11 degree)
f3.dat 57 354947 Bordeaux zone (+11 to +17 degree)
f4.dat 57 436449 Paris zone (+18 to +24 degree)
f5.dat 57 471421 Oxford I zone (+25 to +31 degree)
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Byte-by-byte Description of file: f1.dat, f2.dat, f3.dat, f4.dat
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Bytes Format Units Label Explanations
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1- 2 I2 deg ZONE *plate identifier (1)
3- 5 I3 --- PLATE *plate identifier (2)
6 A1 --- HYPH [-] hyphen
7- 10 I4 --- id running number of star on the plate
13- 14 I2 h RAh right ascension (hours) [B1950]
16- 17 I2 min RAm right ascension (minutes)
19- 24 F6.3 s RAs right ascension (seconds)
25 A1 --- DE- declination sign
26- 27 I2 deg DEd declination (degrees) [B1950]
29- 30 I2 arcmin DEm declination (minutes)
32- 36 F5.2 arcsec DEs declination (seconds)
37- 43 F7.2 a Epoch plate epoch
44- 47 F4.1 mag mag photographic magnitude
48- 55 A8 --- AGKNO *AGK3 number
56- 57 A2 --- SUFFIX *blank
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Note on ZONE:
Declination zone or the declination of the center of each astrographic
plate.
Note on PLATE:
Running number of plate in the zone.
Note on AGKNO:
AGK3 number if AGK3 star was identified in Strasbourg; otherwise blank.
Note, a survey of 100000 records in f1 found no AGK3 numbers.
col. 48-50 may be, e.g., ' -1', '-01', '+01', '&01', ' +1', ' -', etc.
Note, a survey of 100000 records in f1 found no AGK3 numbers.
Note on SUFFIX:
Will be used for the suffix to the AGK3 number but not yet used.
Byte-by-byte Description of file: f5.dat
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Bytes Format Units Label Explanations
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1- 2 I2 deg ZONE *plate identifier (1)
3- 5 I3 --- PLATE *plate identifier (2)
6 A1 --- HYPH hyphen
7- 11 I5 --- id *running number of star in the zone
13- 14 I2 h RAh right ascension (hours) [B1950]
16- 17 I2 min RAm right ascension (minutes)
19- 24 F6.3 s RAs right ascension (seconds)
25 A1 --- DE- declination sign
26- 27 I2 deg DEd declination (degrees) [B1950]
29- 30 I2 arcmin DEm declination (minutes)
32- 36 F5.2 arcsec DEs declination (seconds)
37- 43 F7.2 a EPOCH plate epoch
44- 47 F4.1 mag mag photographic magnitude
48- 55 A8 --- AGKNO *AGK3 number, if AGK3 star was identified in
56- 57 A2 --- SUFFIX *blank
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Note on ZONE, PLATE, AGKNO, and SUFFIX:
See notes for f1.dat, f2.dat, f3.dat, and f4.dat.
Note on id:
This number is so counted as to be unique in the zone.
Acknowledgements:
This ReadMe is a standardization of the Intro file prepared by Koichi
Nakajima [CDS] on 1-Sept-1993.
References :
Eichhorn, H. (1974): Astrometry of Star Positions, Frederick Unger
Publ. Co., New York.
Lacroute, P. (1981): Bull. Inform. CDS, Vol.21, p2.
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(End) Nancy Grace Roman [ADC/SSDOO] 9-May-1996