ON THE FON ASTROPLATE PROJECT ACCOMPLISHMENT
Аннотация
The plan of the photographic survey of thenorthern sky (FON) was proposed in 1976 in Golosiiv ob-servatory (now MAO NAS of Ukraine) by I. Kolchinskyand A. Onegina. The final project of the Compiled FONACcatalog (FON Astrographic Catalog) is based on the digitaldata of photographic plates exposed at four observatories.They are MAO NAS of Ukraine (Kyiv, Ukraine), Kitabastronomical observatory (Tashkent, Uzbekistan), Hissarastronomical observatory (Dushanbe, Tajikistan), and Bal-done observatory (Latvia)). The total amount of plates is5700. The result is expected to be the catalog of positionsand B-magnitudes of stars covered the declination areafrom -20 to 90 degrees. The estimated mean epoch of thecatalog is ~1987. The limiting B-magnitude is ~17.5 m . Thereference system for positions is Tycho-2. B-magnitudesare being obtained in the system of photoelectric standards.The resulted data of photometric reduction are corrected forthe photometric color equation in B magnitudes. The com-plement for the photometric content of the catalog is U andV magnitudes of stars being obtained from the processingof 5400 plates from the glass collection of 1.2 m Schmidttelescope in Baldone. Photometric data of bright stars withV < 8.5 m U, B,V magnitudes cannot be obtained from pho-tographic material, so those objects will gain photometricdata from photoelectric catalogs. The catalog will be com-plemented with proper motions from GAIA.