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A 200 mm F4 (800 mm FL) is getting toward a little too narrow a TFOV compared to what I was seeking, and may be less portable. I think a refractor fits my requirements better overall, but at least it's another idea...
Yes, they're both f/5 so yield identical exit pupils. From what we discussed in the other thread, the 120mm that you are using sounds like a great little unit for visual work, so it's still probably just top in terms of my rank right now.
As for diagonals, I'll typically use my Televue Everbright on it, so I've got the quality eyepiece/diag situation well covered. I have a LPR UHC and an OIII filter already - how would they go in mitigating the CA, do you think?
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