Open AccessKeck laser guide star adaptive optics: science verification results
Author(s) -
Antonin H. Bouchez,
D. Le Mignant,
Marcos A. van Dam,
Jason Chin,
Scott Hartman,
Erik Johansson,
Robert Lafon,
Paul J. Stomski,
Douglas M. Summers,
Peter Wizinowich
Publication year - 2004
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.552503
Subject(s) - adaptive optics , laser guide star , guide star , wavefront , telescope , wavefront sensor , physics , optics , observatory , deformable mirror , coronagraph , laser , computer science , testbed , tilt (camera) , exoplanet , stars , astronomy , mechanical engineering , computer network , engineering
In this paper we describe the operational strategy and performance of the Keck Observatory laser guidestar adaptive optics system, and showcase some early science veriflcation images and results. Being the flrst 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 flnally demonstrated through multi-wavelength imaging of the Egg proto-planetary nebula (CRL 2688).
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