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arXiv · 0909.1119

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
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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$\times$512 pix resolution) per second storage on the hard drive. Due to high quantum efficiency (93% in the maximum at 550 nm), and high transmission of its optical elements, the new camera can be used for diffraction-limited (0.02$''$) 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.

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A. F. Maksimov, Yu. Yu. Balega, V. V. Dyachenko, E. V. Malogolovets, D. A. Rastegaev, E. A. Semernikov. 2009-09-07. The EMCCD-Based Speckle Interferometer of the BTA 6-m Telescope: Description and First Results. https://doi.org/10.1134/s1990341309030092

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