| 翻訳と辞書 |
| Leo I (dwarf galaxy) ： ウィキペディア英語版 |
Leo I (dwarf galaxy)
Leo I is a dwarf spheroidal galaxy in the constellation Leo. At about 820,000 light-years distant, it is a member of the Local Group of galaxies and is thought to be one of the most distant satellites of the Milky Way galaxy. It was discovered in 1950 by Albert George Wilson on photographic plates of the National Geographic Society – Palomar Observatory Sky Survey, which were taken with the 48-inch Schmidt camera at Palomar Observatory.〔(【引用サイトリンク】 work=SEDS Messier Database )〕
==Visibility==
The proximity of Regulus and the low surface brightness make it a real challenge to observe it. Medium-sized amateur telescopes (15 cm or more) and a dark sky appear to be required for a sighting. But some reports of April 2013 tell that one observer with an 11 cm mini Dobson and even a refractor as small as 7 cm f/10 has sighted Leo I under very dark sky conditions.〔(【引用サイトリンク】 url=http://freescruz.com/~4cygni/faintfuzzies.blogspot.com/april-skywatcher.html )〕
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「Leo I (dwarf galaxy)」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.
|
|