4 August 2016 A review of solar adaptive optics
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Abstract
Adaptive Optics (AO) that compensates for atmospheric turbulence is a standard tool for high angular resolution observations of the Sun at most ground-based observatories today. AO systems as deployed at major solar telescopes allow for diffraction limited resolution in the visible light regime. Anisoplanatism of the turbulent air volume limits the effectivity of classical AO to a small region, typically of order 10 seconds of arc. Scientifically interesting features on the solar surface are often larger thus multi-conjugate adaptive optics (MCAO) is being developed to enlarge the corrected field of view. Dedicated wavefront sensors for observations of solar prominences off the solar limb with AO have been deployed. This paper summarizes wavefront sensing concepts specific to solar adaptive optics applications, like the correlating Shack-Hartmann wavefront sensor (SH-WFS), multi-directional sensing with wide-field SH-WFSs, and gives a brief overview of recent developments.
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Dirk Schmidt, Dirk Schmidt, Thomas Rimmele, Thomas Rimmele, Jose Marino, Jose Marino, Friedrich Wöger, Friedrich Wöger, "A review of solar adaptive optics", Proc. SPIE 9909, Adaptive Optics Systems V, 99090X (4 August 2016); doi: 10.1117/12.2232085; https://doi.org/10.1117/12.2232085
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