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Ok so I have loaded the ED80 and the Star71 into Stellarium and have been comparing the 2 against all the well known nebulae to see what would suit better.
The ED80's 600mm looks like a great focal length and I'd like to be around there but if I get a Barlow could I use that on the Star71 to make it a 700mm scope?
What else would you shoot at a FOV around 6 degrees?
I think having the 7D with a crop sensor will help as well to get different effective focal lengths
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