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Proceedings Paper

Three-dimensional high-order wavefront sensing, anisoplanatism, and evaluation of the feasibility of solar MCAO
Author(s): Maud Langlois; Thomas R. Rimmele; Gilberto Moretto
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Paper Abstract

Multiconjugate adaptive optics has been proposed in order to extend the size of the corrected field of view with respect to the classical AO field of view. In order to achieve this, a three dimensional measurement of the turbulent volume is needed to collect the information to command the several deformable mirrors. This can be done by using tomography, in which several WFS are used, each of them coupled to a sky region. Here we report the experimental demonstration of such evaluation for solar observations. In addition, we confront these results on turbulence distribution with a study of AO corrected images by using multi point large field of view wavefront sensing with the new Dunn Solar Telescope adaptive optics system. This yields to information on the AO system performances and provide useful estimate of the PSF variation across the field. The results from this article provides an important step forward for building a full solar multi-conjugate adaptive optics system for the Dunn Solar Telescope and in a longer term for the future 4 meter ATST telescope.

Paper Details

Date Published: 4 February 2004
PDF: 8 pages
Proc. SPIE 5171, Telescopes and Instrumentation for Solar Astrophysics, (4 February 2004); doi: 10.1117/12.509738
Show Author Affiliations
Maud Langlois, National Solar Observatory (United States)
New Jersey Institute of Technology (United States)
Thomas R. Rimmele, National Solar Observatory (United States)
Gilberto Moretto, National Solar Observatory (United States)

Published in SPIE Proceedings Vol. 5171:
Telescopes and Instrumentation for Solar Astrophysics
Silvano Fineschi; Mark A. Gummin, Editor(s)

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