25 October 2004 Ground layer adaptive optics: analysis of the wavefront sensing issue
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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.
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Magalie Nicolle, Magalie Nicolle, Thierry Fusco, Thierry Fusco, Vincent Michau, Vincent Michau, Gerard Rousset, Gerard Rousset, Amandine Blanc, Amandine Blanc, Jean-Luc Beuzit, Jean-Luc Beuzit, } "Ground layer adaptive optics: analysis of the wavefront sensing issue", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.549766; https://doi.org/10.1117/12.549766
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