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Proceedings Paper

Progress with solar multi-conjugate adaptive optics at NSO
Author(s): Thomas Rimmele; Kit Richards; Jacqueline Roche; Steve Hegwer; Alexandra Tritschler
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Paper Abstract

We have implemented a MCAO experiment at the Dunn Solar Telescope. The MCAO system uses 2 deformable mirrors, one conjugated to the telescope entrance pupil and other one conjugated to a layer in the upper atmosphere. For our initial experiments we have used a staged approach in which the 97 actuator, 76 subaperture correlating Shack-Hartmann solar adaptive optics system normally operated at the DST is followed by the second DM and the tomographic wavefront sensor, which used three "solar guide stars". We have successfully and stably locked the MCAO system on solar structure. We varied the height of the upper conjugate between 3km and 9 km. A large number of images were recorded in order to evaluate the performance of the system. The data analysis is still ongoing. We present preliminary results and discuss future plans.

Paper Details

Date Published: 27 June 2006
PDF: 5 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 627206 (27 June 2006); doi: 10.1117/12.671603
Show Author Affiliations
Thomas Rimmele, National Solar Observatory (United States)
Kit Richards, National Solar Observatory (United States)
Jacqueline Roche, Ctr. for Applied Optics, Univ. of Alabama in Huntsville (United States)
Steve Hegwer, National Solar Observatory (United States)
Alexandra Tritschler, National Solar Observatory (United States)

Published in SPIE Proceedings Vol. 6272:
Advances in Adaptive Optics II
Brent L. Ellerbroek; Domenico Bonaccini Calia, Editor(s)

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