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

Benoit Neichel; Amelie Parisot; Cyril Petit; Thierry Fusco; François Rigaut

doi:10.1117/12.925277

13 September 2012 Identification and calibration of the interaction matrix parameters for AO and MCAO systems

Benoit Neichel, Amelie Parisot, Cyril Petit, Thierry Fusco, François Rigaut

Proceedings Volume 8447, Adaptive Optics Systems III; 84475N (2012) https://doi.org/10.1117/12.925277
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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.

Citation Download Citation

Benoit Neichel, Amelie Parisot, Cyril Petit, Thierry Fusco, and François Rigaut "Identification and calibration of the interaction matrix parameters for AO and MCAO systems", Proc. SPIE 8447, Adaptive Optics Systems III, 84475N (13 September 2012); https://doi.org/10.1117/12.925277

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