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Astrophysical Bulletin

, Volume 64, Issue 3, pp 296–307 | Cite as

The EMCCD-based speckle interferometer of the BTA 6-m telescope: Description and first results

  • A. F. Maksimov
  • Yu. Yu. Balega
  • V. V. Dyachenko
  • E. V. Malogolovets
  • D. A. Rastegaev
  • E. A. Semernikov
Article

Abstract

The description is given for the speckle interferometer of the BTA 6-m telescope of the SAO RAS based on a new detector with an electron multiplication CCD. The main components of the instrument are microscope objectives, interference filters and atmospheric dispersion correction prisms. The PhotonMAX-512B CCD camera using a back-illuminated CCD97 allows up to 20 speckle images (with 512×512 pix resolution) per second storage on the hard drive. Due to high quantum efficiency (93% in the maximum at 550 nm), and high transmission of its optical elements, the new camera can be used for diffraction-limited (0.02″) image reconstruction of 15 m stars under good seeing conditions. The main advantages of the new system over the previous generation BTA speckle interferometer are examined.

PACS numbers

95.55.Aq 95.55.Br 95.75.Kk 

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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • A. F. Maksimov
    • 1
  • Yu. Yu. Balega
    • 1
  • V. V. Dyachenko
    • 1
  • E. V. Malogolovets
    • 1
  • D. A. Rastegaev
    • 1
  • E. A. Semernikov
    • 2
  1. 1.Special Astrophysical ObservatoryRussian Academy of SciencesNizhnij ArkhyzRussia
  2. 2.Research Institute of Multiprocessor Computing SystemsSouthern Federal UniversityTaganrogRussia

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