Share Email Print
cover

Proceedings Paper

Current status of the laser guide star adaptive optic system for Subaru Telescope
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The current status and recent results, since last SPIE conference at Orlando in 2006, for the laser guide star adaptive optics system for Subaru Telescope is presented. We had a first light using natural guide star and succeed to launch the sodium laser beam in October 2006. The achieved Strehl ratio on the 10th magnitude star was around 0.5 at K band. We confirmed that the full-width-half-maximum of the stellar point spread function is smaller than 0.1 arcsec even at the 0.9 micrometer wavelehgth. The size of the artificial guide star by the laser beam tuned at the wavelength of 589 nm was estimated to be 10 arcsec. The obtained blurred artificial guide star is caused by the wavefront error on the laser launching telescope. After the first light and first launch, we found that we need to modify and to fix the components, which are temporarily finished. Also components, which were postponed to fabricate after the first light, are required to build newly. All components used by the natural guide star adaptive optics system are finalized recently and we are ready to go on the sky. Next engineering observation is scheduled in August, 2008.

Paper Details

Date Published: 10 July 2008
PDF: 8 pages
Proc. SPIE 7015, Adaptive Optics Systems, 701510 (10 July 2008); doi: 10.1117/12.789992
Show Author Affiliations
Yutaka Hayano, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Hideki Takami, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Olivier Guyon, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Shin Oya, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Masayuki Hattori, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Yoshihiko Saito, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Makoto Watanabe, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Naoshi Murakami, National Astronomical Observatory of Japan (Japan)
Yosuke Minowa, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Meguru Ito, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Stephen Colley, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Michael Eldred, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Taras Golota, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Matthew Dinkins, National Astronomical Observatory of Japan/Subaru Telescope (United States)
Nobunari Kashikawa, National Astronomical Observatory of Japan (Japan)
Masanori Iye, National Astronomical Observatory of Japan (Japan)


Published in SPIE Proceedings Vol. 7015:
Adaptive Optics Systems
Norbert Hubin; Claire E. Max; Peter L. Wizinowich, Editor(s)

© SPIE. Terms of Use
Back to Top