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Proceedings Paper

Tomographic wavefront error estimation and measurement for Raven, a multi-object adaptive optics demonstrator
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Paper Abstract

Multi-Object Adaptive Optics (MOAO) is an open loop aproach to wide field AO which uses measurements from multiple guide stars (GS) to compute an estimate of the atmospheric turbulence in any direction within the GS asterism. Rather than trying to extend correction over the entire field as in Multi-Conjugate AO (MCAO), MOAO seeks only to generate high quality correction in specific directions with multiple deformable mirrors (DM), each driving the correction for an individual direction. A tomographic reconstructor uses the slopes sensed by the GS WFSs to estimate the atmospheric turbulence in the science directions. Raven is a MOAO science and technology demonstrator which is currently under development; testing of tomography algorithms is being carried out in order to begin verifying that the results predicted in simulation will be achievable with the real system.

Paper Details

Date Published: 13 September 2012
PDF: 7 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84475F (13 September 2012); doi: 10.1117/12.925865
Show Author Affiliations
Kate Jackson, Univ. of Victoria Mechanical Engineering (Canada)
Carlos Correia, NRC Herzberg Institute of Astrophysics (Canada)
Olivier Lardière, Univ. of Victoria Mechanical Engineering (Canada)
David Andersen, NRC Herzberg Institute of Astrophysics (Canada)
Colin Bradley, Univ. of Victoria Mechanical Engineering (Canada)

Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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