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I got a GSO 8" F5 here on IIS. It was virtually new. Love it. A great complement to my 80mm refractor for imaging.
You'll need to factor in a good coma corrector, e.g. baader mpcc. I don't know about F5 v f4. But I'd love to try an f4 sometime.
Newts are a great price compared to refractors. Especially second hand. Collimating is no biggie. And I also like the diffraction spikes.
Last edited by ChrisV; 03-08-2017 at 06:27 PM.
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