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The Ohana project aims to use seven big telescopes on top of Mauna Kea, Hawaii Big Island, in an interferometer configuration. Mauna Kea is a former volcano whose height is 13,600 ft (4,145 m). It is a good site for telescopes which probe the universe in the optical and infrared wavelengths because of its altitude and low levels of light pollution. OHANA stands for Optical Hawaiian Array for Nanoradian Astronomy. In Hawaiian, ''‘ohana'' means "family". ==Telescopes involved in the project== Among the telescopes belonging to the Mauna Kea Observatory, seven are involved in the ‘OHANA project : * Two Keck telescopes which each have a 10 m diameter primary mirror. * Subaru with an 8.2 m primary mirror. * Gemini North with an 8 m primary mirror. * Canada France Hawaii Telescope (CFHT) with a prime focus/Cassegrain configuration with a usable aperture diameter of 3.58 meters. * The Infrared Telescope Facility is a 3 m telescope. * The United Kingdom Infrared Telescope is a 3.8 m telescope. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ohana project」の詳細全文を読む スポンサード リンク
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