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Interesting comments all around. It seems apparent that everyone agrees that the CG5 or other similarly priced mounts (including the EQ6?) are not suitable for long duration exposures but OK for visual. If I wanted solely visual use then I would probably have no hesitation in going for a fork mount but I'm thinking of doing a little bit of basic photographic stuff too (you know, some shots like that David Malin bloke takes ;-)). So what is the boundary between short and long exposures for one of these (non-guided) mounts? Obviously depends on several factors including alignment and magnification but would it be in the order of a couple of minutes or more than that? Would I have to exclude all DSOs?
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