The first image is calibrated stack of 40 @ 3 min iso800 f/5.6 and was shot with a 1000D. The second is a 5D mkii first light - no calibration whatsoever - a stack of 42 @3.5 min iso800 f/5.6. Superpixel debayered - so a bit pixely.
Finally able to automate dithering of sorts. The reduction in noise and elimination of other artifacts is just amazing. I had considered dithering as good to do but not essential. Clearly wrong about that.
