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Layer-oriented adaptive optics for solar telescopes

Kellerer, A.

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Authors

A. Kellerer



Abstract

First multiconjugate adaptive-optical (MCAO) systems are currently being installed on solar telescopes. The aim of these systems is to increase the corrected field of view with respect to conventional adaptive optics. However, this first generation is based on a star-oriented approach, and it is then difficult to increase the size of the field of view beyond 60–80 arc sec in diameter. We propose to implement the layer-oriented approach in solar MCAO systems by use of wide-field Shack–Hartmann wavefront sensors conjugated to the strongest turbulent layers. The wavefront distortions are averaged over a wide field: the signal from distant turbulence is attenuated and the tomographic reconstruction is thus done optically. The system consists of independent correction loops, which only need to account for local turbulence: the subapertures can be enlarged and the correction frequency reduced. Most importantly, a star-oriented MCAO system becomes more complex with increasing field size, while the layer-oriented approach benefits from larger fields and will therefore be an attractive solution for the future generation of solar MCAO systems.

Citation

Kellerer, A. (2012). Layer-oriented adaptive optics for solar telescopes. Applied optics, 51(23), 5743-5751. https://doi.org/10.1364/ao.51.005743

Journal Article Type Article
Publication Date Jan 1, 2012
Deposit Date Jan 28, 2013
Publicly Available Date Jan 31, 2013
Journal Applied Optics
Print ISSN 0003-6935
Publisher The Optical Society
Peer Reviewed Peer Reviewed
Volume 51
Issue 23
Pages 5743-5751
DOI https://doi.org/10.1364/ao.51.005743
Public URL https://durham-repository.worktribe.com/output/1468956

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Copyright Statement
© 2012 The Optical Society. This paper was published in Applied optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/AO.51.005743. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.






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