Search

We analyze the multiconjugate adaptive-optics (MCAO) systems and identify the specific features of the conjugation of adaptive mirrors with turbulent layers for ground-based solar telescopes. The optimal size of the field of view for a solar telescope operating under average atmospheric conditions is calculated to be 10 arcsec. Recommendations are given for the development of MCAO systems for ground-based solar telescopes. We suggested the concept of a system for determining 3D wavefront distortions for the Large Solar Telescope LST-3, as well as for the contour of recording phase distortions in the Large Solar Vacuum Telescope. [ABSTRACT FROM AUTHOR]

Modern methods for altitude profiling of atmospheric turbulence are discussed. A method for estimating the altitudes of atmospheric layers characterized by strong turbulence, which is an alternative to the Slodar method, is suggested. The method is based on estimation of the spatiotemporal cross-covariances between local wavefront slopes on subapertures spaced in the telescope field of view and a known angular shift of an object observed due to the Sun motion. Turbulence characteristics are estimated for the Big Solar Vacuum Telescope site. [ABSTRACT FROM AUTHOR]