Thread: diagonals
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Old 06-08-2018, 07:12 PM
morls (Stephen)
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morls is offline
 
Join Date: Sep 2009
Location: Melbourne
Posts: 696
Thinking some more about this now...if the practical field stop of this scope is 1.25", let's say 32mm, then I assume this is the largest eyepiece field stop I can effectively use.

I've made up my mind to get a televue for wide views (at least as wide as the scope can provide). I think the 35mm Panoptic is out because of the 38.7mm field stop. This leaves me with a choice between:

27mm Panoptic with 30.5mm field stop, x100 mag, 1.8mm exit pupil and 0.65 degrees true field
22mm Nagler with 31.1mm field stop, x123 mag, 1.5mm exit pupil and 0.66 degrees true field

I have a couple more questions:

The 22Nag isn't listed on the Bintel site - has this been discontinued?

Would a 1.25" diagonal with 2" eyepiece adapter suffice, given the above eyepiece field stops?
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