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Jase et al - many thanks!
I think I am back to reposition the rotten focal reducer in the Lumicon OAG to see if I can kill this coma - shots where perfect (coma-wise) before this arrived.
Lumicon say it shouldn't occur - but my OTA has a 3" long Meade electronic focuser before the OAG - maybe that is moving the focal range to a position they just didn't test well enough. Maybe the focal reducer just doesn't sit in the OAG absolutely correctly - who knows?
If a star looks streaked at the edges of your shot I'm suprised a custom plug in doesn't detect this and make coma affected stars more round. Worse before a PC crash and software re-load I believe MaximDL use to do this and do it well - it would grab suspect stars then process and leave egg shaped stars more round.
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