Castor : 無料・フリー素材/写真
Castor / Robbo-Man
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | The binary Castor in Gemini, 18 Feb 2006. Castor A and B are 107AU apart (about 10 billion miles), and rotate round each other every 470 years. The system is 50 light years distant. Each star in this image is itself a spectroscopic binary. Digital camera at 3x zoom coupled to reflector fitted with 4mm Plossl delivering 225x. Single 1/3s exposure at f/4.9. |
| 撮影日 | 2006-02-18 21:11:22 |
| 撮影者 | Robbo-Man , Bradford, UK |
| タグ | |
| 撮影地 | |
| カメラ | Digimax V50/a5 , Samsung Techwin |
| 露出 | f/4.9 |
| 開放F値 | f/4.9 |