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Proceedings Paper

First results from the NSO/NJIT solar adaptive optics system
Author(s): Thomas R. Rimmele; Kit Richards; Stephen Hegwer; Stephen Fletcher; Scott Gregory; Gilberto Moretto; Leonid V. Didkovsky; Carsten J. Denker; Alexander Dolgushin; Philip R. Goode; Maud Langlois; Jose Marino; William Marquette
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Paper Abstract

The National Solar Observatory and the New Jersey Institute of Technology have developed two 97 actuator solar adaptive optics (AO) systems based on a correlating Shack-Hartmann wavefront sensor approach. The first engineering run was successfully completed at the Dunn Solar Telescope (DST) at Sacramento Peak, New Mexico in December 2002. The first of two systems is now operational at Sacramento Peak. The second system will be deployed at the Big Bear Solar Observatory by the end of 2003. The correlating Shack-Hartmann wavefront sensor is able to measure wavefront aberrations for low-contrast, extended and time-varying objects, such as solar granulation. The 97-actuator solar AO system operates at a loop update rate of 2.5 kHz and achieves a closed loop bandwidth (0dB crossover error rejection) of about 130 Hz. The AO system is capable of correcting atmospheric seeing at visible wavelengths during median seeing conditions at both the NSO/Sacramento Peak site and the Big Bear Solar Observatory. We present an overview of the system design. The servo loop was successfully closed and first AO corrected images were recorded. We present first results from the new, high order AO system.

Paper Details

Date Published: 4 February 2004
PDF: 8 pages
Proc. SPIE 5171, Telescopes and Instrumentation for Solar Astrophysics, (4 February 2004); doi: 10.1117/12.508513
Show Author Affiliations
Thomas R. Rimmele, National Solar Observatory (United States)
Kit Richards, National Solar Observatory (United States)
Stephen Hegwer, National Solar Observatory (United States)
Stephen Fletcher, National Solar Observatory (United States)
Scott Gregory, National Solar Observatory (United States)
Gilberto Moretto, National Solar Observatory (United States)
Leonid V. Didkovsky, New Jersey Institute of Technology (United States)
Carsten J. Denker, New Jersey Institute of Technology (United States)
Alexander Dolgushin, New Jersey Institute of Technology (United States)
Philip R. Goode, New Jersey Institute of Technology (United States)
Maud Langlois, New Jersey Institute of Technology (United States)
Jose Marino, New Jersey Institute of Technology (United States)
William Marquette, New Jersey Institute of Technology (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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