Efficiency of deformable and segmented mirrors for correction of turbulence-induced wavefront distortions

Vladimir P. Lukin; Boris V. Fortes; Feodor Yu. Kanev

doi:10.1117/12.176027

31 May 1994 Efficiency of deformable and segmented mirrors for correction of turbulence-induced wavefront distortions

Vladimir P. Lukin, Boris V. Fortes, Feodor Yu. Kanev

Proceedings Volume 2201, Adaptive Optics in Astronomy; (1994) https://doi.org/10.1117/12.176027
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

The point spread function (PSF) for a ground-based telescope is calculated for two types of wave front correctors, i.e., deformable and segmented mirrors. The deformable mirror is assumed to be a thin square plate fixed at its center and deformed within a system of lateral forces applied to 20 points. The segmented corrector is a set of square segments with three degrees of freedom, the number of elements varies from 1 to 16. The wavefront distortions are of the Kolmogorov spectrum and are considered to be known for each random realization. It is shown that the PSF calculated for a 9 element segmented corrector (27 degrees of freedom) is close to that obtained for the deformable mirror with 20 degrees of freedom.

Citation Download Citation

Vladimir P. Lukin, Boris V. Fortes, and Feodor Yu. Kanev "Efficiency of deformable and segmented mirrors for correction of turbulence-induced wavefront distortions", Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); https://doi.org/10.1117/12.176027

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