Laser guide star facility developments at W. M. Keck Observatory

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

doi:10.1117/12.2057449

21 July 2014 Laser guide star facility developments at W. M. Keck Observatory

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

Author Affiliations +

Proceedings Volume 9148, Adaptive Optics Systems IV; 914808 (2014) https://doi.org/10.1117/12.2057449
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

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.

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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, and Kai Wei "Laser guide star facility developments at W. M. Keck Observatory", Proc. SPIE 9148, Adaptive Optics Systems IV, 914808 (21 July 2014); https://doi.org/10.1117/12.2057449

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