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Chris
you raise a good point
Firstly, I used 8 to 10 min subs. But I Always used a light pollution filter Hutech - LPS - so no sky glow presented.
I must admit that the Atik 314L had a tendancy to "clip" images when there was a large dynamic range in the image (EG Eta Carinae etc). But I found that its sensativity enabled me to stretch the image without too much noise - therefore I masked the brighter portions and balanced out the image.
The Atik 4000 has a totally different affect on dynamic range. It is more balanced BUT not quite as sensative - so I dont have to mask out the brigh spots, simply strech the entire image.
All trial and error!
The Atik 314L is superb for resolutions requiring a closer view, such as galaxies, full frame nebula shots. The Atik 4000 is great for a wider view
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