Thanks skysurfer... the maintenance thing can't be underrated, but I can't reconcile the probable light grasp difference between even a 120 and an 8" newt/Dob.
I'm going to try my ol' faithful C8 with a reducer next time I get out, but the focal length/true field is still much less than I want ideally whereas a 120 f/6 could give a nice big field, about 4x greater off the top of my head. Hmm.
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