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Proceedings Paper

Laser guide star facility developments at W. M. Keck Observatory
Author(s): Jason C.Y. Chin; Peter Wizinowich; Ed Wetherell; Sylvain Cetre; Sam Ragland; Randy Campbell; Scott Lilley; Jim Lyke; Drew Medeiros; Rachel Rampy; Thomas Stalcup; Kevin Tsubota; Pete Tucker; Kai Wei
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Paper Abstract

Laser Guide Star (LGS) facilities for adaptive optics (AO) have been in routine scientific operation on the Keck II and Keck I telescopes since 2004 and 2012, respectively. Two upgrades are currently in process for the Keck II LGS facility: moving the launch of the laser from the side of the Keck telescope to behind the secondary mirror and replacing the existing dye laser with a Raman-fiber amplifier (RFA) laser. Both of these upgrades are on the path to a multi-LGS facility for Keck’s next generation AO (NGAO) system. We will discuss the performance and operations experience with the existing LGS facilities with an emphasis on the newer Keck I LGS facility, the recently implemented Keck II center launch system and its initial on-sky results, the progress on the design and implementation of the new fiber laser, and the plans for a multi-LGS facility for NGAO.

Paper Details

Date Published: 21 July 2014
PDF: 16 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 914808 (21 July 2014); doi: 10.1117/12.2057449
Show Author Affiliations
Jason C.Y. Chin, W. M. Keck Observatory (United States)
Peter Wizinowich, W. M. Keck Observatory (United States)
Ed Wetherell, W. M. Keck Observatory (United States)
Sylvain Cetre, W. M. Keck Observatory (United States)
Sam Ragland, W. M. Keck Observatory (United States)
Randy Campbell, W. M. Keck Observatory (United States)
Scott Lilley, W. M. Keck Observatory (United States)
Jim Lyke, W. M. Keck Observatory (United States)
Drew Medeiros, W. M. Keck Observatory (United States)
Rachel Rampy, W. M. Keck Observatory (United States)
Thomas Stalcup, W. M. Keck Observatory (United States)
Kevin Tsubota, W. M. Keck Observatory (United States)
Pete Tucker, W. M. Keck Observatory (United States)
Kai Wei, W. M. Keck Observatory (United States)


Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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