Modified Method to Detect the Turbulent Layers in the Atmospheric Boundary Layer for the Large Solar Vacuum Telescope

Author:

Shikhovtsev Artem Yurievich,Kovadlo Pavel Gavrilovich,Kiselev Alexander Victorovich,Kolobov Dmitriy YurievichORCID,Lukin Vladimir Petrovich,Russkikh Ivan VictorovichORCID,Shikhovtsev Maxim Yurievich

Abstract

A method to detect the atmospheric turbulent layers using a single Shack–Hartmann wavefront sensor is discussed. In order to determine the height distribution of the atmospheric turbulence above a telescope, we register the wavefront distortions at different regions of the aperture from a single light solar object moving in time. Changes of the spatial position of the solar object on the sky give us the possibility to estimate the angular shift of an object. Cross-correlation analysis of the low-frequency component of wavefront slopes spaced on the telescope aperture at different times allows us to estimate characteristics for different atmospheric layers. Knowledge of the height profiles of atmospheric turbulence as well as the Fried parameter is critical for wide-field adaptive optics (AO).

Funder

Russian Science Foundation

Publisher

MDPI AG

Subject

Atmospheric Science,Environmental Science (miscellaneous)

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