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About astrophotography

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發表於 2011-11-29 20:24:07 | 顯示全部樓層 |閱讀模式
I would like to ask why people can capture M42 very closely and details by 80/600 telescope??
How can they do it??
Can anybody tell me about the theory??
Thx
發表於 2011-11-29 20:50:08 | 顯示全部樓層
M42 is pretty big and thus it does not require long focal length, the magic is a good sky plus good tracking, image stacking is also necessary.
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