翻訳と辞書 Words near each other ・ Settimo ・ Settimo Milanese ・ Settimo Rottaro ・ Settimo San Pietro ・ Settimo Torinese ・ Settimo Torinese railway station ・ Settimo Torinese–Pont Canavese railway ・ Settimo Vittone ・ Settin' the Pace ・ Settin' the Woods on Fire ・ Settiner See ・ Setting ・ Setting (narrative) ・ Setting apart ・ Setting boundaries ・ Setting circles ・ Setting Free the Bears ・ Setting Me Up ・ Setting Net Lake mine ・ Setting pole ・ Setting Sons ・ Setting spray ・ Setting Standards ・ Setting Sun ・ Setting Sun (band) ・ Setting the features ・ Setting the Pace ・ Setting the Paces ・ Setting the Woods on Fire ・ Setting up to fail 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 Setting circles ： ウィキペディア英語版 Setting circles Setting circles are used on telescopes equipped with an equatorial mount to find astronomical objects in the sky by their equatorial coordinates often used in star charts or ephemerides. ==Description== Setting circles consist of two graduated disks attached to the right ascension (RA) and declination (DEC) axis of an equatorial mount. The right ascension disk is graduated into hours, minutes, and seconds. The declination disk is graduated into degrees, minutes, and seconds. Since right ascension coordinates are fixed to the celestial sphere the RA disk is usually driven by a clock mechanism in sync with sidereal time. Locating an object on the celestial sphere with setting circles is similar to finding a location on a terrestrial map using latitude and longitude. Sometimes the right ascension setting circle has two scales on it: one for the Northern and one for the Southern hemisphere. 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「Setting circles」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.