Access to Astronomical Catalogues

← Click to display the menu
I/304               Carlsberg Meridian Catalog 14  (CMC14)    (CMC, 2006)

Carlsberg Meridian Catalog Number 14 Copenhagen University Obs., Institute of Astronomy, Cambridge, UK, Real Instituto y Observatorio de la Armada en San Fernando <Observations from March 1999 to October 2005>
ADC_Keywords: Meridian observations ; Positional data ; Photometry, CCD Description: The Carlsberg Meridian Telescope (formerly the Carlsberg Automatic Meridian Circle) is dedicated to carrying out high-precision optical astrometry. It underwent a major upgrade in March 1999, with the installation of a 2kx2k CCD camera was installed with a Sloan r' filter operating in a drift scan mode. With the new system, the magnitude limit is 17 (r'mag) and the positional accuracy is in the range 35 to 100 mas. The resulting survey is aimed to provide an astrometric and photometric catalogue in the declination range -30 to +50 degrees. This catalogue is the result of all the observations made between March 1999 and October 2005 in the declination band -30 to +50 -- minus a gap between 5h30m and 10h30m for declinations south of -15. It contains 95,858,475 stars, plus 8,046,291 in the rejected files. Further information can be found in the documentation (cmc14doc.pdf) or at the web site . It supersedes the previous versions (Cat. I/282) A dedicated remote query program (findcmc14) can be downloaded from File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file out.sam 98 27 Sample catalog output (6'x6' centered on 0+0) rejected.sam 98 12 Sample of the rejected stars in the same region. cmc14doc.pdf 1 5246369 PDF original documentation
See also: : Home page for the Carlsberg Meridian Telescope I/259 : The Tycho-2 Catalogue (Hog+ 2000) I/289 : UCAC2 Catalogue (Zacharias+ 2004) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) Byte-by-byte Description of file: out.sam rejected.sam
Bytes Format Units Label Explanations
1- 15 A15 --- CMC14 CMC14-Identifier, based on ICRS position (1) 16 A1 --- f_CMC14 [*R] when 2 stars share the same name (1) 18- 27 F10.6 deg RAdeg Right Ascension ICRS (in mas = 0.01arcsec) (2) 28- 37 F10.6 deg DEdeg Declination ICRS (in mas = 0.01arcsec) (2) 39- 42 I4 d MJD-51263 Mean epoch of astrometry, as days since 26-3-1999 (=MJD-51263, or JD-2451263.5) 44- 49 F6.3 mag r'mag CMC magnitude (ABν scale) (3) 50 A1 --- u_r'mag Flag (:) on r'mag when non-photometric 52- 53 I2 --- Nt Total number of observations 55- 56 I2 --- Na Number of astrometric observations 58- 59 I2 --- Np Number of photometric observations 61- 65 F5.3 arcsec e_RAdeg ? Standard deviation of RAmas 67- 71 F5.3 arcsec e_DEdeg ? Standard deviation of DEmas 73- 77 F5.3 mag e_r'mag ? Standard deviation of r'mag 79- 84 F6.3 mag Jmag ? 2MASS J magnitude, Vega scale (4) 86- 91 F6.3 mag Hmag ? 2MASS H magnitude, Vega scale (4) 93- 98 F6.3 mag Ksmag ? 2MASS Ks magnitude, Vega scale (4)
Note (1): The CMC14 identifier should be preceded by a 'J' (J2000-compatible position); it represents the position truncated to a precision of 0.1s in RA and 1arcsec in Declination. The column f_CMC14 contains a 'R' for the file of rejected stars, and an asterisk for the 2 stars in the non-rejected sample which share the same name, which are: CMC14 J181333.6-271851 at 18:13:33.6048-27:18:51.133 and 18:13:33.6676-27:18:51.322 Note (2): Position on ICRS system, at the epoch indicated in the column MJD-51263. Note (3): Magnitude close the Sloan r' bandpass (passband around 550-690nm) Note (4): 2MASS Point Source catalog, see Cat. II/246, or The magnitudes were set to --- when the 2MASS quality was not 'A'.

(End) Francois Ochsenbein [CDS] 15-Dec-2006
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© Unistra/CNRS