First light report for my UO OPS 9mm Ortho:
Target: Mars
Seeing: Poor seeing conditions 2/10 tonight, so perhaps not a fair comparison to last night's excellent viewing with GS Plossls.
Image not as sharp as I'd hoped, I put that down to atmospheric conditions.
Image contrast: good
Slightly better afov to GS Plossls.
Slight chromatic aberration towardsthe edge of fov. This I found the most dissapointing.
Inbuilt 'planetary' filter toned down harsh glare, without adding any apparent colouration.
I may have expected too much, especially given the conditions. But I am slighlty dissapointed. Given that this is a $190 eyepiece, it does not appear to greatly outshine my GS plossls.
I know I'm not being fair here, just my first impressions. I will naturally give this ep more of a chance to prove itself in due course.
Dave