But now that I think about it, I had no issues with these at night time. I had a good view with what I think was a 8-9mm Plossl. Maybe Kelner, but I think it said Plossl.
Very sharp views in the 8.8mm Meade 82 degree with no issues. Same with the 25mm Plossl.
I think the issue is spherical aberration of the eyepiece, which causes field distortion rather than star aberration, and results in tubes of light not intersecting at the same exit pupil. The small daytime pupil can't take in all the tubes, whereas the larger night time pupil can.
So, a 10mm Plossl is an economical and useful high power eyepiece, but only at night time.
I think a barlow would reduce the field distortion somewhat.
The downside to 52 degrees is it is harder to find planets. An Orion Expanse eyepiece might be the most economical option there. I read the 9mm has some blackout issues, though I've not bought one. I wonder how good the 6mm is.
How good is the 6mm Orion Expanse, and how much better is it than a 10mm Plossl and barlow? A 10mm Plossl costs less than half what the Expanse costs.
Edited by stargazer193857, 21 January 2021 - 10:12 PM.