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VASAO: Visible All Sky Adaptive Optics

【摘要】Building on an extensive and successful experience in Adaptive Optics (AO) and on recent developments made in its funding nations, the Canada-France-Hawaii-Telescope Corporation (CFHT) is studying the VASAO concept: an integrated AO system that would allow diffraction limited imaging of the whole sky in the visible as well as in the infrared. At the core of VASAO, Pueo-Hou (the new Pueo) is built on Pueo, the current CFHT AO bonnette. Pueo will be refurbished and improved to be able to image the isoplanetic field at 700 nm with Strehl ratios of 30% or better, making possible imaging with a resolution of 50 milliarcseconds between 500 and 700nm, and at the telescope limit of diffraction above. The polychromatic tip-tilt laser guide star currently envisioned will be generated by a single 330nm mode-less laser, and the relative position of the 330nm and 589nm artificial stars created on the mesosphere by the 330nm excitation of the sodium layer will be monitored to provide the atmospheric tip-tilt along the line of sight, following the philosophy developed for the ELP-OA project. The feasibility study of VASAO will take most of 2006 in parallel with the development of a science case making the best possible use of the unique capabilities of the system, If the feasibility study is encouraging, VASAO development could start in 2007 for a full deployment on the sky by 2011-2012.

【會議名稱】 Advances in Adaptive Optics II pt.2

【會議地點】OrlandoFL(US)

【作者】Christian Veillet;Olivier Lai;Derrick Salmon;Jean-Paul Pique;

【作者單位】Canada France Hawaii Telescope, 65-1238 Mamalahoa Hwy., Kamuela HI 96743, USA;

【會議組織】

【會議召開年】2006

【頁碼】P.62722I.1-62722I.9

【總頁數】9

【原文格式】PDF

【正文語種】eng

【中圖分類】P111.3;TH751;

【關鍵詞】adaptive optics;laser guide star;polychromatic;visible;all-sky;

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