Spurred by Andy's comment that he thought it looked a bit blurry, we've chucked some frames taken with the galaxy low in the sky, shot an additional night's worth of luminance with no moon, and used dedicated luminance only (i.e. not using RGB as additional luminance).
We think it was pretty good to start with, and actually thought Andy was pulling our leg, but it is unquestionably a tiny bit deeper and sharper now.
TThe biggest change is the colour which might be a bit more natural now, with subs taken under moonlight scrapped.
We think that more data has also meant very slightly less artifact.
Old version here
Revised full-size image is here
Cheers,
Mike and Trish