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well i did some test images to stack over the weekend, but the exposure time was insanely too long (25 seconds) and as such there is some star trailing and too much other crap, not to mention the minute or so that it took to take each photo with the in camera noise reduction, so next time i'm headed to a place with little light pollution (this weekend actually) i plan on takign much shorter exposures, and a lot of them. i reckon about 20 or so photos at 10 seconds should suffice...yeah?
in camera darks might be feasible for that, i would suppose.
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