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Catalog of equatorial coordinates and B‐magnitudes of the Kitab's part of the FON project
Author(s) -
Yuldoshev Q.,
Protsyuk Y.,
Relke H.,
Ehgamberdiev S.,
Muminov M.,
Andruk V.
Publication year - 2019
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.201913490
Subject(s) - observatory , physics , stars , declination , astrophysics , christian ministry , epoch (astronomy) , galaxy , astronomy , telescope , theology , philosophy
We present a catalog of stars with equatorial coordinates α and δ and B‐magnitudes of stars for the Kitab's section of the FON project (FON‐Kitab). The photographic plates of the FON project were exposed on the double telescope Double Zeiss Astrograph (DAZ, D/F = 40/300, 69″/mm) at the Kitab observatory of the Republic of Uzbekistan. A total of 1963 plates, with size of 5.5 × 5.5 degrees (30 × 30 cm or 13,000 × 13,000 pixels) were digitized by Epson Expression 10000XL scanner with 1,200 dpi resolution. The reduction of plates was processed in the four astronomical organizations: Ulugh Beg Astronomical Institute (UBAI) of the Uzbek Academy of Sciences; the Mykolaiv Astronomical Observatory of the Ministry of Education and Science of Ukraine; the Walter Hohmann Observatory of Essen, Germany; and the Main Astronomical Observatory of the National Academy of Sciences of Ukraine. The catalogue contains nearly 13.4 million stars and galaxies from 0° to −20° according to declination down to B = 17. m 5 in the middle epoch of observation 1985.0. The coordinates of the stars and galaxies were obtained from the Tycho‐2 catalogue, while B‐magnitudes were determined in the system of photoelectric standards. The mean internal errors of the new catalogue for all objects were σ αδ = 0. ′′ 23 and σ B = 0. m 15 (for the stars in the range of B = 5 m − 14 m , the errors are σ αδ = 0. ′′ 085 and σ B = 0. m 054 for the equatorial coordinates and the B‐magnitudes, respectively). The convergence between the calculated and reference positions was σ αδ = 0. ′′ 042 . The convergence with the photoelectric B‐magnitudes is σ B = 0. m 16 . External comparison with UCAC‐4 based on 9,892,697 or 73.8% cross‐identified objects yield σ αδ = 0. ′′ 26 .