Quote:
Originally Posted by Paul Haese
Hmm, looks like a little sag somewhere, but always the question is finding out where. Not that I pay much attention to CCDinspector. I find it often can give inconsistent readings. The second reading for M17 shows what I would say as being near perfect. Maybe just chase up the subs Doug. I know that sometimes when stacking I get some slight elongation from the rotation of the sub, because CCDstack thinks it needs to be rotated just a little, which is completely wrong.
Just checking on your M17, the stars are definitely a nicer shape, so maybe a stacking issue or some slop somewhere in the imageing train. Is everything screw fixed? I noticed that once I went to screw fixing all the way along my stars really improved a lot.
Anyway just teething problems really. Still a nice image all the same Doug.
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It will take me a while to find this one I think. All the imaging train is screwed together. I have the CAA, 72mm spacer, CA35 72 to 54mm, 54mm male to male adapter, filterwheel, 54mm to T adapter then the camera. All screwed up nice and tight. Even the focuser shaft is only extended about 1/2 inch. This being the case and the fact that all adapters are commercially made and not my home made bits it's hard to imagine any of these are at fault. The focuser is a standard Tak R&P 2.7" focuser which feels nice and snug. A bit of work ahead of me I think.
I am not using a flattener at this stage but may have to look at fitting the 35mm flattener and see if this provides some correction.
It's just getting time to try a few things.
