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Hi Brad, I have a Saxon branded 5"f5 achro its a great rich field scope and a fantastic guide scope/finder scope for my 10" newt. Fast f ratio achro's have lot of CA to deal with. Like Glen said a Baader Semi-APO filter will tame the worst of the CA. I have had some success with a light polution filter. Anyway here are a few snaps, all single frames.
The first one 5"f5, second one with LPB filter, the third with LPB filter and some photoshop tweeking and the last one with a 4"f7 achro for focal length CA comparison.
Rick
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