- Celestron C90
- eye relief
looks great, short eye relief
Delivered quickly. I have an early 80s Celestron C90 and am stuck using 0.96" eyepieces. I tried this one and it looks great, but eye relief is shorter than I'd hoped. But after all, it's a 17mm. I was tempted by the hybrid diagonal and a 1.25" eyepiece, but am not sure it would be much better on the old C90.
Ordered by phone very helpful and made sure I got what I needed