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Hi Greg, was that the 107FL? That one does appear to be marginal, as its numbers would suggest.
@John, the 90FL can be bought with a non-helical focusser if that's what's needed. I have an old Telementor 1 with a helical, and it works great. Accepted, not everyone likes them.
I tried a Sky90 once, side-by-side with the FC76 DC. the 90 is quite a bit heftier than the 76, and while it did go a bit deeper on detail and brightness, the difference wasn't huge. The 76's image of planets and the moon OTOH seemed a little crisper. That difference wasn't big either though. On balance, I enjoyed using the 90 but it hasn't replaced my 76. My 8" dob which was also present showed me that it really doesn't matter all that much whether the small frac is 60, 80 or 90mm, it's still a small frac. I'd say recognise the strengths and weaknesses of the small aperture and get the one with the best ratio of image quality and portability.
Last edited by N1; 18-03-2020 at 09:28 AM.
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