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Just had a look at a few objects. Sorry but my visual view is limited at this stage to just a few objects in the southern sky. Now there is also a full moon which may impact observations of CA greatly.
First off I looked at Miaplacidus in Carina. It's magnitude 1.65. Some violet fringing was visible around the star but not bright enough to bother me. With a Baader Semi-Apo filter I was unable to see any blue fringe. I would say anything fainter than mag 2 or 3 and CA is either not visible or reduced to a low level.
Next was Eta Carina. I couldn't see any CA of anything in the field. But the moon is so strong I could barely see any nebula either.
Acrux at the bottom or right at the moment of Crux. Acrux is magnitude 1.25, CA as a faint violet fringe around the star was noticeable but again didn't bother me. I had trouble splitting the main pair but the atmosphere is terrible tonight. Crux is low at the moment so low alt may play some role in that. I also had trouble splitting the pair in the 68mm F 8.8 scope. The Baader filter reduced the CA but I could still see a little if I looked hard.
Mimosa next. Also at Mag 1.25 and much the same story as Acrux. Some violet fringe but it didn't bother me.
Just down a bit was the jewel box cluster. No CA at all visible in the field. Looked quite pretty actually.
Gacrux on the left at magnitude 1.55 showed no CA that I could see though it was a strong red / orange colour but I think that's normal.
Had a look at the same things through the 68mm F8.8 scope. Same focal length etc. The 68mm F8.8 achro is about as perfect as a scope can be. I didn't see and CA or field curvature on anything. With the 120mm F5 scope there is some field curvature present and the edges of the field are distorted. I would say this was more annoying to me than the CA. But the little 68mm F8.8 scope was soooo dark compared the the 120mm! Give me aperture any day! For visual use anyway.
Well that's my visual report. Cloudy now so just got that done in time.
I can dig through my old pics for some raw pics through the 120mm if you want? I won't do anything to reduce the CA.
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