Quote:
Originally Posted by Startrek
Chris,
Welcome
Excellent M83
So much fine detail in the arms and core , colour is really nice too
Well done !!
Martin
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Thanks Martin.
The fine detail took a lot of work.
The C8 I used was never a good performer. Always a soft focus and not usable with anything above a 12mm eyepiece. I dragged it out of the garage as a Covid project, to either fix or scrap.
Completely stripped it down and rebuilt. I found multiple problems with how it was assembled. Secondary holder was 2mm off the optical axis. Main mirror was tilted 4 degrees off the baffle axis, things like this. I 3D printed jigs to reassembled correctly.
Fortunately the mirror figuring is excellent. Star tests look great now.