Quote:
Originally Posted by gregbradley
Hey Don,
Would you mind explaining what exit pupil is and how it relates to choosing an ideal eyepiece for a particular focal length?
I understand it is calculated as eyepiece focal length/ telescope Fratio.
What is an ideal exit pupil and what are the liabilities of violating it?
I see folks talking about exit pupil all the time in the CN eyepiece forum and I haven't really studied what it is and how important it is.
Greg.
|
Hey Greg, Don will no doubt give an experienced explanation, but ive been reading a lot about this for a while, and ended up with my selection that way, and the spreadsheet at the top of the thread has Exit pupil at the Centre.
Maybe these will help?
https://skyandtelescope.org/astronom...-pupil-primer/
https://stargazerslounge.com/topic/2...he-exit-pupil/