ES AR 102 EPs

[Michael131313]

I have an ES AR 102 and am curious as to what EPs others have found that they like with this scope. I know it's subjective, but anyway. BTW no more than a 5mm exit pupil as I am getting up there.

Thanks Michael

[Lady Fraktor]

A 32mm eyepiece will give you just under a 5mm exit pupil (4.9mm) So anything between a 6.5mm and a 32mm
I had the Celestron version and generally used Plossl and Vixen LVW

[Michael131313]

Thanks very much m' Lady.

[Lady Fraktor]

I have a 30mm 68° AFOV Orion Stratus that would give a 3.1° TFOV and 4.6mm exit pupil.
Great for clear night panning around

[Ozman]

I mainly use my ES 82s in the AR102.

[KingNothing13]

I know that there is a calculation for figuring out the Exit Pupil, but cannot remember what it is - can anyone remind me?

[Lady Fraktor]

Focal Length of eyepiece divided by the Focal Ratio of the telescope.

[Michael131313]

Thanks Ozman. That is nice to know because other than my GSO SV 30mm that is all have.


Thanks Gabby. Is the 30mm 68° AFOV Orion Stratus similar to the GSO SV 30mm?

[KingNothing13]

Focal Length of eyepiece divided by the Focal Ratio of the telescope.

Thanks - I knew it was something simple, but was too lazy to look it up!

[Lady Fraktor]

First post in the eyepiece forum somewhere about the second paragraph

[Lady Fraktor]

Thanks Ozman. That is nice to know because other than my GSO SV 30mm that is all have.


Thanks Gabby. Is the 30mm 68° AFOV Orion Stratus similar to the GSO SV 30mm?

They were a clone of the Vixen LVW eyepieces.
They are not as good as the LVW but for a lower budget set they are pretty good.