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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Klevtsov–Cassegrain telescope ： ウィキペディア英語版 Klevtsov–Cassegrain telescope The Klevtsov–Cassegrain telescope is a type of catadioptric Cassegrain telescope that uses a spherical primary mirror and a sub-aperture secondary corrector group composed of a small lens and a Mangin mirror. ==Design== In the Klevtsov-Cassegrain all of the optical surfaces are spherical or near-spherical.〔(New optical systems for small-size telescopes (abstract) )〕〔(New optical systems for small-size telescopes )〕 The secondary Mangin mirror () and the meniscus corrector (''C'') are held in place by a spider vane and the front of the telescope tube is otherwise open. These types of telescopes have the disadvantage of spider to hold the corrector causing diffraction artifacts〔(Diffraction effects of telescope secondary mirror spiders on various image-quality criteria )〕 and, since multiple surfaces are involved, achieving good aberration correction can be very complex.〔(- Vladimir Sacek, telescope-optics.net, Notes on AMATEUR TELESCOPE OPTICS, CATADIOPTRIC TELESCOPES, 10.2.1 )〕 This design was originally envisaged by G. I. Popov with a practical implementation by Yuri A. Klevtsov. Commercial manufactures of the design include Novosibirsk TAL and Vixen. 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「Klevtsov–Cassegrain telescope」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.