Abstract
We describe the modifications made in the design of the Kyiv meridian axial circle (MAC) and in the observation technique after the instrument was equipped with a CCD camera with an array of 10401160 pixels. The observations are performed in the drift-scan mode (time-delay imaging) with an effective exposure time of 108 s for equatorial stars. The MAC photometric system reproduces the stan- dard V system; the limiting magnitude is V =1 7 m . The observations made with the modified MAC in 2001-2003 served as the basis for the KMAC1 catalog which contains positions, proper motions, and magnitudes B, V, R, r', J for 100 000 stars in the sky areas with the ICRF objects. The errors of positions and V magnitudes in the catalog are 50-90 mas and 0.1 m , respectively, for stars with V =1 5 m . Stars in the equatorial sky areas and radio stars are presently observed with the aim to determine their exact posi- tions, proper motions, and magnitudes. The catalogs are available in the data base of the Centre de Donnes Astronomiques de Strasbourg (ftp.cdsarc.u-strasbg.fr) and on the site of the Main Astronomi- cal Observatory (http://www.mao.kiev.ua).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have