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Proceedings Paper

Keck laser guide star adaptive optics: science verification results
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Paper Abstract

In this paper we describe the operational strategy and performance of the Keck Observatory laser guidestar adaptive optics system, and showcase some early science verification images and results. Being the first laser guidestar system on an 8-10 m class telescope, the Keck laser guidestar adaptive optics system serves as a testbed for observing techniques and control algorithms. We highlight the techniques used for controlling the telescope focus and wavefront sensor reference centroids, and a wavefront reconstructor optimized for use with an elongated guidestar. We also present the current error budget and performance of the system on tip-tilt stars to magnitude R=17. The capability of the system to perform astronomical observations is finally demonstrated through multi-wavelength imaging of the Egg proto-planetary nebula (CRL 2688).

Paper Details

Date Published: 25 October 2004
PDF: 10 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.552503
Show Author Affiliations
Antonin H. Bouchez, W.M. Keck Observatory (United States)
David Le Mignant, W.M. Keck Observatory (United States)
Marcos A. van Dam, Lawrence Livermore National Lab. (United States)
Jason Chin, W.M. Keck Observatory (United States)
Scott Hartman, W.M. Keck Observatory (United States)
Erik Johansson, W.M. Keck Observatory (United States)
Robert Lafon, W.M. Keck Observatory (United States)
Paul Stomski, W.M. Keck Observatory (United States)
Douglas Summers, W.M. Keck Observatory (United States)
Peter L. Wizinowich, W.M. Keck Observatory (United States)

Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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