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Proceedings Paper

Commissioning status of Subaru laser guide star adaptive optics system
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Paper Abstract

The current status of commissioning and recent results in performance of Subaru laser guide star adaptive optics system is presented. After the first light using natural guide stars with limited configuration of the system in October 2006, we concentrated to complete a final configuration for a natural guide star to serve AO188 to an open use observation. On sky test with full configurations using natural guide star started in August 2008, and opened to a public one month later. We continuously achieved around 0.6 to 0.7 of Strehl ratio at K band using a bright guide star around 9th to 10th magnitude in R band. We found an unexpectedly large wavefront error in our laser launching telescope. The modification to fix this large wavefront error was made and we resumed the characterization of a laser guide star in February 2009. Finally we obtained a round-shaped laser guide star, whose image size is about 1.2 to 1.6 arcsec under the typical seeing condition. We are in the final phase of commissioning. A diffraction limited image by our AO system using a laser guide star will be obtained in the end of 2010. An open use observation with laser guide star system will start in the middle of 2011.

Paper Details

Date Published: 27 July 2010
PDF: 8 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77360N (27 July 2010); doi: 10.1117/12.857567
Show Author Affiliations
Yutaka Hayano, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Hideki Takami, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Shin Oya, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Masayuki Hattori, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Yoshihiko Saito, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Makoto Watanabe, Hokkaido Univ. (Japan)
Olivier Guyon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Steward observatory, The Univ. of Arizona (United States)
Yosuke Minowa, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Sebastian E. Egner, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Meguru Ito, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Vincent Garrel, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Stephen Colley, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Taras Golota, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Masanori Iye, National Astronomical Observatory of Japan (Japan)


Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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