Vol. 20, issue 11, article # 11

Nosov V.V., Grigorjev V.M., Kovadlo P.G., Lukin V.P., Nosov E.V., Torgaev A.V. Astroclimate of specialized rooms of the Large solar vacuum telescope. Part 1. // Atmospheric and oceanic optics. 2007. V. 20. No. 11. P. 926-934.
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Abstract:

Measurement results on local astroclimate parameters in specialized rooms of the Large solar vacuum telescope (Baikal Astrophysical Observatory ISTP SB RAS) are presented. It is shown that temperature gradients in the telescope rooms cause the Benard cells and turbulence in the pavilion of astronomical spectrograph. The characteristics of incipient turbulence are studied in detail; it is ascertained that the turbulence contributes significant errors in spectral measurements (even on short paths) and approximates to regular refraction by their optical properties due to low frequency-shifts.

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