High fidelity sky coverage analysis via time domain adaptive optics simulations
Abstract
We describe a high fidelity simulation method for estimating the sky coverage of multiconjugate adaptive optics systems; this method is based upon the split tomography control architecture, and employs an AO simulation postprocessing technique to evaluate system performance with hundreds of randomly generated natural guide star (NGS) asterisms. A novel technique to model the impact of quadratic wavefront aberrations upon the NGS point spread functions is described; this is used to model the variations in system performance with different asterisms, and is crucial for obtaining accurate results with the postprocessing technique. Several design and algorithm improvements help to reduce the residual wavefront error in the tip/tilt and plate scale modes that are controlled using the NGS asterism. These improvements include choosing the right wavefront sensor (WFS) pixel size, optimal pixel weights, and type II control of the plate scale modes.
Additional Information
© 2009 Optical Society of America. Received 3 June 2009; revised 20 July 2009; accepted 18 August 2009; posted 20 August 2009 (Doc. ID 112301); published 10 September 2009. This work is supported by the National Science Foundation (NSF) Science Technology Center for Adaptive Optics, managed by the University of California at Santa Cruz under cooperative agreement AST-9876783. This work is also supported by the Thirty Meter Telescope (TMT) project. The authors gratefully acknowledge the support of the TMT partner institutions. They are the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, and the University of California. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada, the Natural Sciences and Engineering Research Council of Canada, the British Columbia Knowledge Development Fund, the Association of Universities for Research in Astronomy (AURA), and the U.S. National Science Foundation.Attached Files
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Additional details
- Eprint ID
- 16319
- Resolver ID
- CaltechAUTHORS:20091013-093453455
- AST-9876783
- NSF
- Association of Canadian Universities for Research in Astronomy (ACURA)
- Caltech
- University of California
- Gordon and Betty Moore Foundation
- Canada Foundation for Innovation
- Ontario Ministry of Research and Innovation
- National Research Council of Canada
- Natural Sciences and Engineering Research Council of Canada
- British Columbia Knowledge Development Fund
- Association of Universities for Research in Astronomy (AURA)
- Created
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2009-10-26Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field