Looks like a nice refractor Peter. The CA is not too bad really and stars look pretty sharp across the frame. A UHCS filter (good for light pollution too) or a contrast booster might be even better than a fringe killer (more cutoff in the blue) - but the fringe killer might eliminate most of that.
You can do halo reduction also in post processing with some software like images plus.
Good luck and look forward to seeing more pikkies.
Regards
David
|