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Sorry as I said I dumped the image data I can only assume that DSS did confuse the noise with stars. I might drop the ISO to 400 on warmer nights and move away from doing darks and lights and use in camera noise reduction instead.
It may be something to do with the camera sensor and light pollution in my area as the images where extremely noisy.
Thanks
Last edited by TrevorW; 30-10-2008 at 08:27 PM.
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