Canada-France-Hawaii Telescope adaptive optics bonnette II: simulations and control

Details Canada-France-Hawaii Telescope adaptive optics bonnette II: simulations and control Canada-France-Hawaii Telescope adaptive optics bonnette II: simulations and control

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2201..149r&link_type=abstract

Proc. SPIE Vol. 2201, p. 149-160, Adaptive Optics in Astronomy, Mark A. Ealey; Fritz Merkle; Eds.

Physics

Optics

15

Scientific paper

We report on the results of the system simulation software written at Canada-France-Hawaii Telescope, to predict and optimize the performance of our adaptive optics bonnette presently under construction. The individual simulation elements, atmospheric simulator, curvature sensor, bimorph mirror and control loop, are reviewed with an emphasis on the basic properties of curvature sensors. Optimization of the extra-focal distance parameter and its consequences are discussed. We then present results of whole system simulations, and quantify the main sources of error. Some results, including noise, are reported. In a second part, we present our view of modal control and detail the construction of the modal basis. We also report briefly on modal gain optimization.

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