Large-telescope natural guide star adaptive optics system

David C. Redding; Mark H. Milman; Laura Needels

doi:10.1117/12.176097

31 May 1994 Large-telescope natural guide star adaptive optics system

David C. Redding, Mark H. Milman, Laura Needels

Proceedings Volume 2201, Adaptive Optics in Astronomy; (1994) https://doi.org/10.1117/12.176097
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

This paper presents an adaptive optics (AO) system for a large IR telescope. The Keck Telescope on Mauna Kea is used as a case study. The system is designed to provide low-order wavefront correction using faint natural guide stars. It is shown that two innovations, namely the use of an AO-optimized CCD detector, and use of a variable control bandwidth, result in correction to a Strehl ratio of about 0.1 using guide stars of visual magnitude 18. Sky coverage is approximately 20% at this level of performance. Sky coverage rises to 100% at a Strehl ratio of 0.05.

Citation Download Citation

David C. Redding, Mark H. Milman, and Laura Needels "Large-telescope natural guide star adaptive optics system", Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); https://doi.org/10.1117/12.176097

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