Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006kfnt...22..309f&link_type=abstract
Kinematika i Fizika Nebesnykh Tel, vol. 22, no. 4, p.309-320
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We present an astrometric catalogue of faint reference stars around ICRF sources of northern hemisphere. The XC1 catalogue is compiled at the astrometry department of the Institute of Astronomy of the V. N. Karazin Kharkiv National University. The catalogue contains positions and proper motions of about 1 million stars in 10...20m magnitude range within 256 selected areas of northern sky in the ICRS/Tycho2 system. The XC1 catalogue is based on our results of measurements and astrometric reduction of digitized images of Schmidt plates from the POSS-I and POSS-II sky surveys, obtained from USNOFS PMM Image Archive. For each selected field, 5--10 individual positions from O, E, J, F and N plates were used to derive the mean positions and proper motions. Additionally, the 2MASS star positions at observation epoch were used, if this was possible. Magnitude-depended systematic errors are removed and color-depended systematic errors are not taken into account.
Fedorov Peter N.
Myznikov A. A.
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