Richard Spina Reviews

I had hoped for a lot better results with this eyepiece. It is not perfectly sharp out to the edges in either my fast (f/5.4) apo or a friends f/4.1 reflector. We did a number of side by side tests, over several sessions, and the sharpness in the outer 50% of the field is noticeably poorer than the 20 Nagler. I had hoped for better, since it is easier to use (eye relief and size) than the 20. The 22 did work fine in my f/15 Mak (almost all eyepieces are perfectly sharp in this scope). I also do not care for the instadjust.