/ftp/cats/I/302



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Y/2006/Jan/26     XC1 catalogue of positions and proper motions (Fedorov+, 2005)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	xcfields.dat xcindex.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=I/302
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Beginning of ReadMe : I/302 XC1 catalogue of positions and proper motions (Fedorov+, 2005) ================================================================================ The CX1 catalogue of positions and proper motions of faint stars around the ICRF sources. Fedorov P., Myznikov A. <Kinematics and physics of celestial bodies, Supplement, 5, (2005)> ================================================================================ ADC_Keywords: Positional data ; Proper motions ; Magnitudes, photographic Keywords: astrometry - reference systems - catalogues Description: We present the astrometric catalogue of faint reference stars in 255deg^2^ sized fields with ICRF objects of northern hemisphere. The XC1 is based on our results of measurements and astrometric reduction of digitized images of Schmidt plates POSS-I and POSS-II sky surveys obtained from USNOFS PMM Image Archive. The Tycho-2 (Cat. I/259) catalogue was used as a reference catalogue for astrometric reductions. The mean positions and proper motions of stars were derived from their individual positions at the different epochs. For some stars the 2MASS (Cat. II/246) positions were used also. The limiting magnitude is about V=19mag. The estimated external errors are 50-150mas in positions at mean epoch, and 2-5mas/yr in proper motions, depending on magnitude. The catalog is present as a set of individual fields in separate files. The name of each file is the ERS designation of corresponding ICRF radio source.