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2 results

  • The Wide-Field Plate Database: A New Tool in Observational Astronomy

  • M.K. Tsvetkov, K.Y. Stavrev, K.P. Tsvetkova, E.H. Semkov, A.S. Mutafov, M.-E. Michailov
  • Journal:
    Symposium - International Astronomical Union / Volume 179 / 1998
    Published online by Cambridge University Press:
    25 May 2016, pp. 462-464
    Print publication:
    1998
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  • Since the first applications of wide-field photography in astronomy nearly 2 million plates and films have been obtained and stored in archives all over the world. The Wide-Field Plate Database (WFPDB) provides astronomers with detailed information about the wide-field photographic observations. Its preparation started in 1991 as one of the main projects initiated by the Working Group on Wide Field Imaging at the IAU Commission 9.

  • Wide-Field Observations of Variable Stars in the Region of NGC 7129

  • E.H. Semkov
  • Journal:
    Symposium - International Astronomical Union / Volume 161 / 1994
    Published online by Cambridge University Press:
    26 July 2016, pp. 475-477
    Print publication:
    1994
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  • During our programme for nonstable and flare star investigations in the star forming regions, more than 290 UBVR photographic plates in the field of the bright nebula NGC 7129 were obtained. The photographic observations were made with the 50/70/172 cm Schmidt telescope of the Rozhen Astronomical Observatory of the Bulgarian Academy of Sciences during the period September 1984–July 1993.