So, I'm still in a bit of a learning phase. I'm looking at these 4MM plossls from Astrotech (or most 4MM for that matter) that have these insanely tiny holes that we're supposed to see through. Is this the "exit pupil?" And do they really expect us to see through that thing?
I see a 4MM from a much more expensive EP maker and the glass of the lens on the eye side is much larger, looks easier to use.
Is this the exit pupiil? And if so, does this mean that when the hole is really tiny (as in the 4MM plossl) that one must get up really really close to the EP to view, hence "short eye relief?" And when the hole is larger, one need not be so close to the EP, hence greater eye relief?
Thanks all. Just trying to learn learn the lingo.
Edited by Craven, 19 January 2021 - 08:58 AM.