Make sure that you have told DSS the right Bayer matrix RGGB not GRBG, there are a few different settings. That will mess with the image more than anything as the algorithm goes over the whole Bayer irrespective of size.
Its the Levels and Curves iterations that bring out fine dim data that would other wise be hidden. or commonly known as Stretching the data. virutally your taking what is but a pin prick in a 32bit output dropping it to 16bit (thats the amount of colours you are able to use so work as long as you can in 32bit). you then take that same pin prick and stretch it out to fill as much of the 16 bit histogram as you can with out stuffing up the black/white points.
Sometimes its the smallest things that will upset the apple cart.!
No problems about the shot, my thing is that taking the image is 20-30% of the task, processing it the rest. aka ill take 2-4hrs of data and it will take me days to process it properly.
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