ADAPTIVE MODE OF THE MSS BTA

Автор(и)

  • G. A. Chountonov Special Astrophysical Observatory RAS Nizhnij Arkhyz, Російська Федерація
  • I. D. Najdenov Special Astrophysical Observatory RAS Nizhnij Arkhyz, Російська Федерація

DOI:

https://doi.org/10.18524/1810-4215.2008.21.86841

Ключові слова:

Stars, high precision spectral measurements

Анотація

The study of instability of the Main stellar spectrograph of the 6-m Telescope together with system of registration of a spectrum by means of the CCD shows that there is a drift of a spectrum along a dispersion, corresponding to the tenth of a pixel (the hundredth part of Α) in an hour. To eliminate this drift, i.e. to keep a spectrum from displacement, the plane-parallel glass plate was installed behind a slit of the spectrograph. The angle of inclination of this plate changes depending on a mismatch of positions of the current and comparison basic spectra. A lamp of hollow cathode is used. The scheme of this device is described. The results of tests are presented. The time of correction takes about one minute that allows to keep the position of the ThAr spectrum within +-0.0006 Α.

Посилання

Vasiliev A.S. et al.: 1977, Optical Mechanical Industry, 2, 31.

Chountonov G.A.: 2004, Proceedings of International Conference on Magnetic Fields, N.Arkhyz, 27–31 Aug 2003 /Eds. Yu.V. Glagolevskij, D.O. Kudryavtsev, I.I. Romanyuk, 2004, p. 286–291.

Panchuk V.E. et al.: 2007, SAO report N 212.

Najdenov I.D. et al.: 2008, SAO report N 315.

Chountonov G.A. et al.: 2000, Proceedings of International Conference on Magnetic Fields of Chemically Peculiar and Related Stars, N.Arkhyz, Russia,

Eds. Yu.V. Glagolevskij, I.I. Romanyuk. p.249

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Опубліковано

2008-12-20

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