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- There are quite a lot. University of California, San Diego, Berkeley, Santa Cruz, University of Arizona, University of Texas, Austin, CalTech, MIT, Cornell, just to name a few.
- i want to study astronomy in america.can anybody tell me the name of the astronomical university(if any) in america ?i would be grateful to u if u succeed in this.
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- 小关来啦！！ ok~我自称shooting你会影响比较深刻！ 你这些叫一些照片啊？？ 快快放多点照片！ 我为了看照片，几乎天天上来叻！ 然后每次都失望~~哎~ 看过那么多科学营后记， 你的版面看起来最pro~ 不过，还是文恬的最详细~哈哈
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The focal ratio is the ratio of the focal length to the aperture. So, a telescope with a 2500 mm focal length, and 250 mm aperture would be an f/10 scope. A scope with a smaller focal ratio always benefits the users in imaging as it shortens the exposure time. Some people will call it [...%5
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