翻訳と辞書 Words near each other ・ Near and far field ・ Near and Far Sawrey ・ Near Caves ・ Near Changes ・ Near Dark ・ Near Dark (soundtrack) ・ Near Dark (unfinished film) ・ Near Death (comics) ・ Near Death Experience (Cro-Mags album) ・ Near Death Experience (disambiguation) ・ Near Death Experience (film) ・ Near Death Experience (Spektr album) ・ Near Dublin ・ Near Earth Asteroid Prospector ・ Near Earth Network ・ Near Earth Object Surveillance Satellite ・ Near East ・ Near East Air Force (Royal Air Force) ・ Near East and South Asia Undergraduate Exchange Program ・ Near East B.C. ・ Near East Broadcasting Station ・ Near East Command ・ Near East earthquakes of 1759 ・ Near East Foundation ・ Near East School of Theology ・ Near East Side ・ Near East Side Historic District ・ Near East Side, Columbus, Ohio ・ Near East South Asia Center for Strategic Studies ・ Near East University 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 Near Earth Object Surveillance Satellite ： ウィキペディア英語版 Near Earth Object Surveillance Satellite The Near Earth Object Surveillance Satellite (NEOSSat)〔 is a Canadian microsatellite using a 15-cm aperture f/5.88 Maksutov telescope similar to that on the MOST spacecraft, 3-axis stabilized with pointing stability of ~2 arcseconds in a ~100 second exposure. It is funded by the Canadian Space Agency (CSA) and Defence Research and Development Canada (DRDC),〔 and will search for interior-to-Earth-orbit (IEO) asteroids,〔〔 at between 45 and 55 degree solar elongation and +40 to -40 degrees ecliptic latitude.〔 == Spacecraft == NEOSSat is a suitcase-sized microsatellite measuring , including telescope baffle, and weighting .〔〔 It is powered by gallium arsenide (GaAs) solar cells placed on all six sides of its frame;〔 the entire spacecraft uses around 80 watts of power,〔 with the bus core systems consuming an average of 45 watts.〔 The spacecraft uses miniature reaction wheels for stabilization and attitude control,〔〔 and magnetic torque rods to dump excess momentum by pushing against Earth's magnetic field,〔〔 so no on-board fuel is required for operation.〔 NEOSSat is a descendent of Canada's earlier MOST satellite. It was built on the Multi-Mission Microsatellite Bus, which was created using data from the development of MOST.〔 Its science payload includes a telescope of the same design as that on MOST,〔〔 and uses spare CCD detectors from the MOST mission.〔 The sole instrument is a Rumak-Maksutov telescope with a 0.86 degree field of view and a 5.88 focal ratio.〔 Incoming light is split and focused on two passively cooled 1024×1024 pixel CCDs,〔 one used by the NESS and HEOSS projects and the other by the spacecraft's star tracker.〔 Since the telescope is aimed relatively close to the Sun, it contains a baffle to shield its detectors from intense sunlight.〔 The science camera takes 100-second-long exposures, allowing it to detect celestial objects down to magnitude 20.〔 NEOSSat's attitude control will allow it to maintain pointing stability of less than one arcsecond during the entire 100 second exposure period.〔〔 It will take up to 288 images per day,〔 downloading multiple images to its Canadian ground station with each pass.〔 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「Near Earth Object Surveillance Satellite」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.