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Thanks for looking Guys.
Rolf. No, those hrs are not always required, I do it because I can, and my tube is only 10" f9. Also, the hrs allow more stretching/sharpening etc without noise being a bother at all, thats a nice luxury !. With a 12" and say f3.5 , 5-7 nm Ha filter and more noise processing, you would get the same effect with a quarter of the exposure time (or less).
Marc. OK, sharpening is borderline, but OK I recon, perhaps I should have isolated the stars, they look a bit hard (and plastic perhaps). That plastic effect creeps in too with colour boosted and sharpness, not sure what to do about that.
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