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I think the key thing to know is how well does it hold collimation? At F2.8 collimation is going to be critical.
The other thing with these types of scopes is that they are really sensitive to flexure and weight.
So if you used a light weight camera/filter wheel with it that would be the smart strategy.
Try to put a FLI Proline on it and you'll end up throwing it in the lake!
Greg.
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