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Interesting stuff and thankfully about what l was hoping for.
I've done some reading on apparent and true FOV, exit pupil and eye relief.
I'll make up a spread sheet with my 2 GSO 50° and my planetary EP and work out all the numbers for my 127mm aperture and 1200mm FL and over 50 yr old eyes.
I won't be rushing out to buy a 2" EP just yet, l need to plan because l need to got to Japan as soon as covidly possible. (I can see a small apo in my future.)
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