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Proceedings Paper

Ground layer adaptive optics: analysis of the wavefront sensing issue
Author(s): Magalie Nicolle; Thierry Fusco; Vincent Michau; Gerard Rousset; Amandine Blanc; Jean-Luc Beuzit
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Paper Abstract

Here are presented the basis of an analytical development whose purpose is to give arguments for the evaluation of wavefront sensing concepts for Ground Layer Adaptive Optics. Simple hypothesis make possible the derivation of analytical expressions for the phase measurement error and reveal consequent differences between Star Oriented and Layer Oriented concepts. Influence of key parameters such as guide star statistics or strength of the turbulence in altitude are then studied. In the Layer Oriented case, necessity of reducing the guide stars flux dispersion to achieve a uniform correction in the field of interest is demonstrated.

Paper Details

Date Published: 25 October 2004
PDF: 12 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.549766
Show Author Affiliations
Magalie Nicolle, ONERA (France)
Thierry Fusco, ONERA (France)
Vincent Michau, ONERA (France)
Gerard Rousset, ONERA (France)
Amandine Blanc, Observatoire de Grenoble (France)
ONERA (France)
Jean-Luc Beuzit, Observatoire de Grenoble (France)

Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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