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Proceedings Paper

Wavefront reconstruction algorithms for astronomical adaptive optics systems
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Paper 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.

Paper Details

Date Published: 31 May 1994
PDF: 8 pages
Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); doi: 10.1117/12.176103
Show Author Affiliations
Ray M. Sharples, Univ. of Durham (United Kingdom)
Andrew Peter Doel, Univ. of Durham (United Kingdom)
Richard M. Myers, Univ. of Durham (United Kingdom)

Published in SPIE Proceedings Vol. 2201:
Adaptive Optics in Astronomy
Mark A. Ealey; Fritz Merkle, Editor(s)

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