A moderate-resolution Nasmyth-focus spectrograph of the 6-m BTA telescope |
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| Authors: | D N Monin V E Panchuk |
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| Institution: | (1) Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Karachai-Cherkessian Republic, 357147, Russia |
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| Abstract: | We report on the development of a fast crossed-dispersion spectrograph (CRAB) mounted at the Nasmyth focus of the 6-m telescope. The spectrograph is designed for visible and near-infrared (3800–10 500 Å) CCD observations with the spectral resolution R=4000. We give the basic parameters of the optical scheme and the parameters of the echelle frame. We determined the gain involved in putting the spectrograph into observational practice and discuss the possible range of spectroscopic problems for which the instrument is optimal. |
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| Keywords: | methods of astronomical observations devices and instruments echelle spectrograph |
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