This is really a photoshop test for me. It's a composite of 14 x 120sec and 7 x 300sec images all at iso1600. I think they may be a little out of allignment, not much.
The idea is to use the 2 minute images where the 5 minute images would be burnt out and use the 5 minute images for detail. Clouds rolled in at 9pm and imaging stopped so only 7 x 300sec images. It probably needs a brighter object or longer exposures to make a bigger difference.
Is it worth the effort
... not on M8
[edit] Added m8a that has been sharpened with a mask
