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Hi Frank,
very nice setup you have!
Looks like your tracking is working well.
But... and as Simon pointed out, your back ground is way to dark.
Ok, first things first, you don't need to take darks with that chip... the Sony chips are relatively noiseless... use a sigma combine method and the noise disappears.
Don't worry about any flats for the time being unless you really need to do so.
The data doesn't appear to be stretched at all as I can gather bringing it into Photoshop. With 108 minutes of data, this image should be well illuminated showing a great deal of information and detail to both the object and the background (stars, faint & bright and small fuzzies).
What image acquisition and processing program are you using??
I suspect if you're using the Atik program, you need to do some reading on how to stretch the data correctly. I believe this program works well, but I have never used it so can't comment.
With what you have, go back to your original raw images and have another try at stretching each individual sub then combine them with a sigma filter.
I think you'll be impressed.
Rich
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