Righto - I think I know what's going on. Did a bit more reading and found that the Neximage "raw" mode is only 5fps and hence what I am probably seeing is AVI compression which explains the mpeg looking artefacts. I need to get a proper CCD program to capture properly.
But at 5fps, it's way slower than ,my 40D but admittedly, the images from the Neximage seem richer and considerably lower noise than the 40D.
The Neximage is 16bit according to Celestron.
Cheers,
Darrin...
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