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Proceedings Paper

Identification and calibration of the interaction matrix parameters for AO and MCAO systems
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Paper Abstract

New tomographic Adaptive Optics (AO) concepts require a good knowledge of the system geometry and characteristics. These parameters are used to feed the tomographic reconstructors. In this paper we present a method to precisely identify the parameters required to construct an accurate synthetic set of models such as inuence functions, mis-registrations, directions of analysis or altitude of the DMs. The method is based on a multiparameter t of the interaction matrix. This identication method nds also its application in high contrast AO systems, such as SPHERE : in that case it is used as a diagnostic tool in order to precisely realign the system. The method has been tested and successfully implemented on HOMER, SPHERE and GeMS. Experimental results for these three systems are presented.

Paper Details

Date Published: 13 September 2012
PDF: 15 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84475N (13 September 2012); doi: 10.1117/12.925277
Show Author Affiliations
Benoit Neichel, Gemini Observatory (Chile)
Amelie Parisot, ONERA (France)
Cyril Petit, ONERA (France)
Thierry Fusco, ONERA (France)
François Rigaut, Gemini Observatory (Chile)

Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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