I/303 CdC2000 Bordeaux Carte du Ciel catalogue (Rapaport+, 2006)
The CdC2000 Bordeaux Carte du Ciel catalogue (+11°<delta<+18°).
Rapaport M., Ducourant C., Le Campion J.F., Fresneau A., Argyle R.W.,
Soubiran C., Teixeira R., Camargo J.I.B., Colin J., Daigne G., Perie J.P.,
Requieme Y.
<Astron. Astrophys. 449, 435 (2006)>
=2006A&A...449..435R 2006A&A...449..435R
ADC_Keywords: Surveys ; Positional data
Keywords: astrometry - catalogues - reference systems - surveys
Description:
We present the CdC2000 catalogue issued from the reduction of the
complete Bordeaux Carte du Ciel zone observed at the beginning of last
century with the Bordeaux astrograph. This catalogue is a positional
catalogue of 344780 stars covering the declination zone
+11°<delta<+18°. The average epoch of positions is 1914.7. The
data are from the 512 Carte du Ciel plates archived at the Bordeaux
Observatory and scanned with the APM Cambridge automatic measuring
machine. Plates have been individually reduced using the TYCHO-2
Catalogue as astrometric reference. Astrometric standard errors are
about 0.10" to 0.12" on positions and 0.6 magnitudes on photographic
magnitudes. A detailed study of errors and a comparison of various
reduction methods are presented in order to take into account the
significant propagated errors from the reference catalogue. The
CdC2000 provides positions at the epoch of the plates for 50 682
TYCHO-2 stars. The associated positions are proved to be 0.11" more
precise than the positions given by the Tycho-2 catalogue at the epoch
of the plates. This work is part of a program of proper motion
measurements in the Bordeaux Carte du Ciel zone (PM2000, Cat.
I/300).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
cdc2000.dat 75 344781 CdC2000 catalogue
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See also:
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
I/300 : PM2000 Bordeaux Proper Motion catalogue (Ducourant+, 2005)
Byte-by-byte Description of file: cdc2000.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- CDC2000 Identification number
10- 11 I2 h RAh Mean Right Ascension J2000 at central epoch Ep
13- 14 I2 min RAm Mean Right Ascension J2000 at central epoch Ep
16- 21 F6.3 s RAs [0/60] Mean Right Ascension J2000 at central
epoch Ep
23 A1 --- DE- Mean Declination J2000 at central epoch Ep
24- 25 I2 deg DEd Mean Declination J2000 at central epoch Ep
27- 28 I2 arcmin DEm Mean Declination J2000 at central epoch Ep
30- 34 F5.2 arcsec DEs [0/60] Mean Declination J2000 at central
epoch Ep
38- 45 F8.3 yr Ep Central epoch for RA and DE
48- 51 F4.1 mag pgmag Photographic magnitude (320nm)
52- 59 F8.2 mas e_Pos Standard error on each coordinate of positions
62- 65 I4 --- TYC1 ? TYC1 Identificator for TYCHO-2 stars
68- 71 I4 --- TYC2 ? TYC2 Identificator for TYCHO-2 stars
75 I1 --- TYC3 ? TYC3 Identificator for TYCHO-2 stars
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Acknowledgements: Christine.Ducourant(at)obs.u-bordeaux1.fr
(End) Patricia Vannier [CDS] 22-Nov-2005