Hi All,
I know it's been done to death but I wanted to share my first attempt at Orion using Canon 7D 70-200mm Sigma @ 200mm F/2.8 2.5sec exposure, 45 images (35 lights 10 darks) stacked in Deep Sky Stacker and processed in LR afterwards. This was more of an effort to see how far I could push my equipment on a tripod with no tracking. I've since discovered the limitations of the iOptron skytracker with my big lens and can really only see it being used for wide angle astrophotography.
Orion Nebula
Cheers Jason