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Proceedings Paper

Performance of Subaru adaptive optics system AO188
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Paper Abstract

Subaru adaptive optics system (AO188) is an 188-elements curvature sensor adaptive optics system that is operated in both natural and laser guide star modes. AO188 was installed at Nasmyth platform of the Subaru telescope and it has been successfully operating in the natural guide star mode since October 2008. The performance of AO188 in the natural guide star mode has been well verified from on-sky data obtained with the infrared camera and spectrograph (IRCS). Under normal seeing condition, AO188 achieves K-band Strehl ratio between 60% and 70% using R = 9.0 magnitude natural guide stars and it works well with faint guide stars down to R = 16.5 magnitude. We measured the FWHM and Strehl ratio of stellar images in globular clusters and found that the isoplanatic angle is approximately 30 arcsec. In this paper, we describe an overview of the operation procedure for AO188, as well as its performance such as angular resolution, Strehl ration, and sensitivity gain for detecting faint objects.

Paper Details

Date Published: 28 July 2010
PDF: 7 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77363N (28 July 2010); doi: 10.1117/12.857818
Show Author Affiliations
Yosuke Minowa, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Yutaka Hayano, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Shin Oya, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Makoto Watanabe, Hokkaido Univ. (Japan)
Masayuki Hattori, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Olivier Guyon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Sebastian Egner, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Yoshihiko Saito, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Meguro Ito, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Hideki Takami, 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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