[dhein (David)]

Hi Humayn,

Thanks for your suggestions & feedback. I typically take 50 lights & 25 subs, and they are always created fresh in the same session over a few hours. My experience has been that initial results shooting at 30 secs worked well, and it it was possible to see the improvement through Deep Sky Stacker of combining lots of data. It's only since I started trying guiding and longer exposures 2min+ that I've had this noise issue using the same methodology that worked before for shorter exposures.

I'm about to post further results from my 500D vd 500D comparison, and this demonstrates my issue .. eg. that even before manipulation I'm handicapped.

Cheers
David