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Thanks guys. Advice and suggestions all welcome and appreciated.
As a matter of interest, I set up the optical train as per the diagram I posted earlier and ran a couple of daylight test shots. Awful.
I attach 3 images - one is very out-of-focus and the next is more in-focus showing the serious image distortions going on with the Lepus reducer. The third image shows the optical train I was using - and you'll note that the OAG and the Celestron SCT adapter have both pushed the reducer well back from the back of the scope. It may be that this is the cause. IUf it is, then I have to look at a way to put the OAG behind the reducer but to do this I'll have to have a special-purpose adapter made in order to maintain the 100mm distance between reducer and CCD.
Peter
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