@inproceedings{4e8cc1ac5b924845b90b4b22ac50c20c,
title = "Current status of the laser guide star adaptive optic system for Subaru Telescope",
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.",
keywords = "Adaptive optics, Bimorph mirror, Curvature sensor, Laser guide star, Subaru Telescope",
author = "Yutaka Hayano and Hideki Takami and Olivier Guyon and Shin Oya and Masayuki Hattori and Yoshihiko Saito and Makoto Watanabe and Naoshi Murakami and Yosuke Minowa and Meguru Ito and Stephen Colley and Michael Eldred and Taras Golota and Matthew Dinkins and Nobunari Kashikawa and Masanori Lye",
year = "2008",
doi = "10.1117/12.789992",
language = "English (US)",
isbn = "9780819472250",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Adaptive Optics Systems",
note = "Adaptive Optics Systems ; Conference date: 23-06-2008 Through 26-06-2008",
}