Simulations of wave front measurements and tomography for Extremely Large Telescopes

Details Simulations of wave front measurements and tomography for Extremely Large Telescopes Simulations of wave front measurements and tomography for Extremely Large Telescopes

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sf2a.conf...67c&link_type=abstract

SF2A-2010: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: S. Boissier, M. Heydari-

Physics

Optics

Adaptive Optics, Inverse Problem, Reconstruction, Sparse Matrix

Scientific paper

The control of AO systems dedicated to ELT is a difficult problem related to the large number of degrees of freedom. The standard and most used adaptive optics AO control starting from the integrator to the LQG are not useful in such a case. In fact, for future Extremely Large Telescope (ELTs) the number of degrees of freedom is very large related to the large diameter of the ELTs and the emergence of new architectures for the AO systems. So that the necessary computational power for real time control RTC on such systems is currently unattainable when using these control methods. Thus, more efficient algorithms are required. We present simulation results of a tomographic AO system in the configuration of EAGLE instrument (multi-object adaptive optics).

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