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Hi All, back again.
Thanks for the update, the calculation given by Janoskiss explains it well. So the reality is that in a 1.25" going over 32mm is a bit of a waste of effort, and in going to a 2" I really need to get a SWA or similar....
To answer some of the other comments, I guess for me I already have a good range of EPs (6.7 UWA, 8.8 UWA, 13.8 SWA, and 24.5 SWA all Meade 4000s) so I was not so much looking for info on the lower focal length ep but wondering if I was to go to the 32 or 40mm focal length would it be worth the effort considering I wasnt planing to replace what I had but add to it? Hence was a 30mm 1.25" similar to a 30mm 2" (or 40mm) or if I was going to get something much different in terms of performance. So all in all I suspect getting a new visual back, and angle, and a 30/40mm SWA (or similar) is probably just too expensive for the use. Maybe I should have stated all this up front but I didnt think it added to the question at the time.
Out of interest what are peoples thoughts on using a focal reducer to get a wider FOV? Again I already have one (6.3) but am not 100% sold on it, though in saying that I have only recently gotten it and only used it in suburbia so far (so still reservice judgement)... Oh and all this is on a C8 to complete the picture, a nice old one, really old, ok handed down from granny sort of old....
Anyway thanks again for all the advice.
M
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