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Hi Mark,
Agree with the comments below.
Also, I think it depends a bit on your eyes. A couple of months back I purchased an Panoptic 35mm for use in my f/5 dob reflector, but my ageing 43 year old eyes could not cope with the 7mm exit pupil (my eye had to be alighned in exactly the right spot to see the image). The best I can comfortably cope with is an exit pupil of 6mm (30mm EP in my scope).
The 30mm GSO SuperView (68deg) and 26mm Meade QX (70deg) 2 inch eyepieces suffered from heaps of coma used with my scope .... okay for locating things in the scope but unfortunately spoiling large nebulas and open clusters.
Long focal length 1.25 inch EPs generally have a narrower AFOF (eg. 45 or 50 deg).
Hope this helps.
Cheers, Jeff
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