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Proceedings Article

Low-cost solar adaptive optics in the infrared

[+] Author Affiliations
Christoph U. Keller, Claude Plymate, S. M. Ammons

National Solar Observatory (USA)

Proc. SPIE 4853, Innovative Telescopes and Instrumentation for Solar Astrophysics, 351 (February 1, 2003); doi:10.1117/12.460370
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From Conference Volume 4853

  • Innovative Telescopes and Instrumentation for Solar Astrophysics
  • Stephen L. Keil; Sergey V. Avakyan
  • Waikoloa, Hawai'i, USA | August 22, 2002

abstract

We have developed a low-cost adaptive optics system for solar observations in the infrared between 1 and 28 μm with the 1.5-m McMath-Pierce solar telescope. The 37-actuator membrane mirror and a fast tip-tilt mirror are controlled by a PC running Linux RedHat 7.1 that analyzes images from a 256 by 256 pixel, 1 kHz frame rate CCD camera. The total hardware cost is less than $25,000, and the system provides diffraction-limited performance under median seeing conditions above 2.3 μm. The single Pentium III processor provides enough computing power to analyze the 200 subapertures of the Shack-Hartmann wavefront sensor in real time. We describe the hardware and software implementations and show results from the first tests at the telescope.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Christoph U. Keller ; Claude Plymate and S. M. Ammons
"Low-cost solar adaptive optics in the infrared", Proc. SPIE 4853, Innovative Telescopes and Instrumentation for Solar Astrophysics, 351 (February 1, 2003); doi:10.1117/12.460370; http://dx.doi.org/10.1117/12.460370


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