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I am not sure how much of a jump 106 to 130mm aperture is.
106 will be wider but the 130 has a reducer available which I suppose takes it back to closer to the 106 FOV.
The cost of the 130 is of course very high and puts it up against much larger instruments for the same price. But then you are starting to lose the widefield strength of the FSQ design.
So perhaps 106 is the ideal aperture and 130 is getting too long focal length and competes with 140-155mm instruments or larger compound scopes.
Hard to say without seeing a lot of example images. I have seen a couple but surprisingly they were done with modded DSLRs. It seems strange to spend that much on the scope and then use a modded DSLR but whatever people are used to using I suppose but despite that they were impressive images.
Greg.
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