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Proceedings Paper

Canada-France-Hawaii Telescope adaptive optics bonnette II: simulations and control
Author(s): Francois J. Rigaut; Robin Arsenault; John M. Kerr; Derrick A. Salmon; Malcolm J. Northcott; Yvan Dutil; Corinne Boyer
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Paper Abstract

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.

Paper Details

Date Published: 31 May 1994
PDF: 12 pages
Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); doi: 10.1117/12.176039
Show Author Affiliations
Francois J. Rigaut, Canada-France-Hawaii Telescope Corp. (United States)
Robin Arsenault, Canada-France-Hawaii Telescope Corp. (United States)
John M. Kerr, Canada-France-Hawaii Telescope Corp. (United States)
Derrick A. Salmon, Canada-France-Hawaii Telescope Corp. (United States)
Malcolm J. Northcott, Univ. of Hawaii Institute for Astronomy (United States)
Yvan Dutil, Univ. Laval (Canada)
Corinne Boyer, Laserdot Groupe Aerospatiale (United States)

Published in SPIE Proceedings Vol. 2201:
Adaptive Optics in Astronomy
Mark A. Ealey; Fritz Merkle, Editor(s)

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