翻訳と辞書 Words near each other ・ Zenith (building) ・ Zenith (comics) ・ Zenith (disambiguation) ・ Zenith (film) ・ Zenith (watchmaker) ・ Zenith 248 SX ・ Zenith Aircraft Company ・ Zenith Applied Philosophy ・ Zenith Bank ・ Zenith Bank Gambia ・ Zenith Bank Ghana ・ Zenith Bank Sierra Leone ・ Zenith Bank UK ・ Zenith Brass ・ Zenith Cable Modem ・ Zenith camera ・ Zenith Carburetor Company ・ Zenith Carburettor Company (British) ・ Zenith Centre ・ Zenith Computers ・ Zenith Computers (India) ・ Zenith Contract Services ・ Zenith Data Systems ・ Zenith Data Systems Challenge Trophy ・ Zenith Electronics ・ Zenith Flash-matic ・ Zenith Gemini CH-620 ・ Zenith Glacier ・ Zenith Insurance Company ・ Zenith Komarniski Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Zenith camera ： ウィキペディア英語版 Zenith camera A zenith camera is an astrogeodetic telescope used today primarily for the local surveys of Earth's gravity field. Zenith cameras are designed as transportable field instruments for the direct observation of the plumb line (astronomical coordinates) and vertical deflections. == Instrument == A zenith camera combines an optical lens (about 10–20 cm aperture) with a digital image sensor (CCD) in order to image stars near the zenith. Electronic levels (tilt sensors) serve as a means to point the lens towards zenith. Zenith cameras are generally mounted on a turnable platform to allow star images to be taken in two camera directions (two-face-measurement). Because zenith cameras are usually designed as non-tracking and non-scanning instruments, exposure times are kept short, at the order of few 0.1 s, yielding rather circular star images. Exposure epochs are mostly recorded by means of the timing-capability of GPS-receivers (time-tagging). 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「Zenith camera」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.