Quote:
Originally Posted by wmzaphod
I've also been told to take lots of short exposures and stack rather than long ones - I'm confused (quite common) 
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For planetary imaging hundreds to thousands of short exposures work best. This is because most planets are bright and the magnification required is huge. This is why people capture video sequences for planetary work.
For deep space (which is what you are attempting here) you need long exposures and consequently good tracking.