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Proceedings Paper

Atmospheric turbulence characterization with the Keck adaptive optics systems
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Paper Abstract

The wavefront sensors of adaptive optics systems of astronomical telescopes collect an abundance of high temporal resolution information about the distortions that are introduced to the incoming wavefront by atmospheric turbulence. Although this information can theoretically be used to analyze the turbulence conditions above the telescope at the given time, it is often discarded. The reason for this dismissal of seemingly useful information is usually the difficulty of separating atmospheric and instrumental contributions to the wavefront sensor measurements and thus of obtaining reliable estimates of the atmospheric turbulence conditions. In this paper we describe an effort to overcome these problems for wavefront sensor measurements taken by the Keck telescopes on Mauna Kea. We discuss different methods of deriving turbulence parameters, such as coherence length and time and the outer scale of turbulence, and present first results.

Paper Details

Date Published: 7 February 2003
PDF: 12 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.459045
Show Author Affiliations
Matthias Schock, Univ. of California/Irvine (United States)
David Le Mignant, W.M. Keck Observatory (United States)
Gary A. Chanan, Univ. of California/Irvine (United States)
Peter L. Wizinowich, W.M. Keck Observatory (United States)

Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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