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WSO-UV project guide star catalogue: experimental verification of its photometric system

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Abstract

Precise pointing and stabilization of the T-170M telescope (World Space Observatory Ultraviolet, WSO-UV project) is provided by the Fine Guidance System (FGS) that uses a guide star catalogue (Master Catalogue). To verify the photometric system of the Master Catalogue we have carried out ground based observations with a CCD-camera in a spectral band, close to that of FGS. We have found, that the photometric quality of the Master Catalogue is sufficient for FGS operations. The mean photometric error in the range of 14–17 mag is ±0.23 mag; its variation over the sky does not exceed the factor of two. 2% of stars from the Master Catalogue have photometric errors higher than 2 mag. We have also found a correlation between large photometric errors and the Master Catalogue flags.

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Authors and Affiliations

  1. Institute of Astronomy, Russian Academy of Sciences, 48 Pyatnitskaya Str., 119017, Moscow, Russia

    A. S. Shugarov, N. V. Chupina & A. E. Piskunov

  2. Main Astronomical Observatory, National Academy of Sciences of Ukraine, 27 Academica Zabolotnogo Str., 03680, Kiev, Ukraine

    N. V. Kharchenko

Authors
  1. A. S. Shugarov
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  2. N. V. Chupina
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  3. A. E. Piskunov
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  4. N. V. Kharchenko
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Correspondence to A. S. Shugarov.

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Shugarov, A.S., Chupina, N.V., Piskunov, A.E. et al. WSO-UV project guide star catalogue: experimental verification of its photometric system. Astrophys Space Sci 335, 317–321 (2011). https://doi.org/10.1007/s10509-011-0696-8

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  • DOI: https://doi.org/10.1007/s10509-011-0696-8

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