Thanks for the advice Michael. I'm prepared to lose a bit of the Nebula just to get some more detail in those small nebulous patches. Through the ED80 it was amazing to the see the full extent of it and those bright yellow stars in particular. Anyway, I've been shooting at ISO800 which, given the noise on the camera and the generally warm conditions up here, seems like a good mark to hit. Surprised I'd get more detail with the ed100 so that's good! So is it longer exposures or more subs that would do the trick? My feeling is that longer subs are the way to go (to really fill out the first half of the histogram) although light pollution might well have a say on how long I can go.
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