|
Joe from the threads on cloudynights about these:
- they are new designs,
- they appear to be extremely well corrected, anecdotally as good or better than TV eyepieces though that hasn’t been verified by someone doing a real side by side test on a bench with the gear to measure them;
- ostensibly they’re for Flat-field scopes which strongly implies APOs with flatteners - or flat-field APOs (as mine is, a quad).
- they should also suit large long focal length scopes where the field curvature isn’t as significant as it is with small scopes. I would not recommend them for short dobs or refractors under 1600mm focal length.
The downside is they have a LOT of elements and that raises questions about ghosts and scattered light in extreme-contrast situations (lunar limb, Jupiter).
|