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ESPriF: the Echelle-Spectropolarimeter of the BTA Primary Focus. Correction of Low-Frequency Variations in the Star Image

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Abstract

The development of a corrector for low-frequency variations in the star image at the input of ESPriF—the echelle spectropolarimeter of the BTA primary focus—is reported. New technical solutions have made it possible to extend the operating frequency range to 10 Hz for stars brighter than \(13^{\mathrm{m}}\).

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Fig. 1.
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Notes

  1. https://www.sao.ru/hq/ssl/

  2. https://www.eso.org/observing/etc/skycalc

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ACKNOWLEDGMENTS

Observations with the SAO RAS telescopes are supported by the Ministry of Science and Higher Education of the Russian Federation. The renovation of telescope equipment is currently provided within the national project ‘‘Science and Universities.’’

Funding

The work was performed as part of the SAO RAS government contract approved by the Ministry of Science and Higher Education of the Russian Federation.

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Authors and Affiliations

  1. Special Astrophysical Observatory of the Russian Academy of Sciences, 369167, Nizhny Arkhyz, Russia

    M. V. Yushkin, E. V. Emelianov, Yu. B. Verich & V. E. Panchuk

Authors
  1. M. V. Yushkin
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  2. E. V. Emelianov
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  3. Yu. B. Verich
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  4. V. E. Panchuk
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Correspondence to M. V. Yushkin or E. V. Emelianov.

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Yushkin, M.V., Emelianov, E.V., Verich, Y.B. et al. ESPriF: the Echelle-Spectropolarimeter of the BTA Primary Focus. Correction of Low-Frequency Variations in the Star Image. Astrophys. Bull. 78, 613–621 (2023). https://doi.org/10.1134/S1990341323700220

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  • DOI: https://doi.org/10.1134/S1990341323700220

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