翻訳と辞書 Words near each other ・ John E. Arnold ・ John E. Baldwin ・ John E. Bardgett ・ John E. Barley ・ John E. Barnes, Jr. ・ John E. Beck ・ John E. Bendix ・ John E. Benington ・ John E. Bercaw ・ John E. Berninger ・ John E. Bird ・ John E. Blaha ・ John E. Blakeley ・ John E. Boland ・ John E. Booth House ・ John E. Bortle ・ John E. Bradley ・ John E. Braun ・ John E. Bridges ・ John E. Brooks ・ John E. Buck ・ John E. Buffington ・ John E. Burch ・ John E. Bush ・ John E. Butts ・ John E. C. Appleton ・ John E. Cameron ・ John E. Carlson Coliseum ・ John E. Cashman ・ John E. Casida 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 John E. Bortle ： ウィキペディア英語版 John E. Bortle John E. Bortle is an American amateur astronomer. He is best known for creating the Bortle scale to quantify the darkness of the night sky. Bortle has made a special study of comets. He has recorded thousands of observations relating to more than 300 comets. From 1977 until 1994 he authored the monthly '"Comet Digest" in ''Sky and Telescope'' magazine. He also had a special interest in variable stars, recording more than 200,000 observations. From 1970 until 2000 he edited the monthly AAVSO circular for the American Association of Variable Star Observers.〔(【引用サイトリンク】title=John E. Bortle - 2013 Leslie Peltier Award )〕 He published his darkness scale in ''Sky and Telescope'' magazine in 2001. The scale ranges from 1 (extremely dark rural area or national park, usually at high elevation, low humidity, and low wind) to 9 (urban inner city).〔http://www.icq.eps.harvard.edu/bortle.html〕 ==Recognition== * The asteroid 4673 Bortle was named in his honor.〔 * In 2013 he received the Leslie Peltier Award from the Astronomical League. 〔 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「John E. Bortle」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.