I have a Televue Binovue with the 2x corrector. I would like to calculate the exit pupil. Let's say for example that I have a f/5 scope and a 10mm eyepiece. So I would do 10/5=2mm exit pupil. But with a 2x corrector would I divide this again by 2 to yield a 1mm exit pupil?
Calculating exit pupil with a binovue
Started by paul.knight, 06/17/2014 01:33AM
Posted 06/17/2014 01:33AM
Opening Post
Posted 06/17/2014 12:56PM
#1
That sounds right to me.
Try measuring the exit pupils with a transparent ruler. Differences will be obvious.
Another exercise: hold up your favorite eyepiece and note the exit pupil. Attach a Barlow and see how smaller the exit pupil is.
John
Try measuring the exit pupils with a transparent ruler. Differences will be obvious.
Another exercise: hold up your favorite eyepiece and note the exit pupil. Attach a Barlow and see how smaller the exit pupil is.
John
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