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Great shot Andrew and certainly proof that Nikon is now good for astrowork. There may have been some lingering doubts.
Very very fine resolution. What is the dark band along the bottom though?
I have used ISO6400 and 25600 on the D800E and it worked fine. A bit of noise at ISO25600 starting to intrude.
I would think ISO6400 could easily be standard for a D800. It will require a small amount of noise control but if you stack in particular and use darks and flats then it should be fine.
ISO1600 is a breeze for this camera and also Canon 5D3. They are similar in performance in high ISO noise levels except in jpeg where Canon is better and in RAW Nikon is slightly better. The main difference of course is the 2 stops extra dynamic range of the Nikon and the 36mp higher resolution.
Greg.
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