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Yeah, per my later post, the collimation is just a sniff off, it was not obvious previously but I have fiddled with the spacing and the effective focal length has gone from about 1340 to about 1500mm, presumably making it that little bit more critical.
I think there are two components to it, some coma that is more or less inevitable with this scope unless I spend a lot more than I want to on it (This really is my visual scope) and a tweak required on the collimation. Hopefully the clouds give me some opportunity to fiddle over this coming weekend so I can collimate a bit more precisely.
Bojan, as near as "Damn" is to swearing 1500mm FL, with 4.63um pixels. I am probably being harsh on it, this is an integration of only a couple of subs grabbed on the spot as opportunity knocked after I did something else and before I went to bed.
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