Wavefront reconstruction algorithms for astronomical adaptive optics systems

Ray M. Sharples; Andrew Peter Doel; Richard M. Myers

doi:10.1117/12.176103

31 May 1994 Wavefront reconstruction algorithms for astronomical adaptive optics systems

Ray M. Sharples, Andrew Peter Doel, Richard M. Myers

Proceedings Volume 2201, Adaptive Optics in Astronomy; (1994) https://doi.org/10.1117/12.176103
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

The requirements of wavefront reconstruction algorithm for use in astronomical adaptive optics systems are discussed. We present the results of realistic numerical simulations of the closed-loop performance of a Shack-Hartmann wavefront sensor used in conjunction with a high-order segmented mirror suitable for adaptive correction on a 4 m telescope at visible wavelengths. Iterative over-relaxation methods are used to derive the segment piston values, and we investigate the behavior of these techniques in the presence of photon and detector noise. We also discuss the use of non variance-minimizing techniques to optimize the point- spread function for particular astronomical applications.

Citation Download Citation

Ray M. Sharples, Andrew Peter Doel, and Richard M. Myers "Wavefront reconstruction algorithms for astronomical adaptive optics systems", Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); https://doi.org/10.1117/12.176103

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