Rick - those shots look great. I've imaged all those targets with the ED80 and the extra reach makes all the difference. I've got a good mount with goto capability so will guide one day, but it's good to know it's possible without - particularly with a full frame DSLR.
Aidan - we joked about how I'll likely buy all your used gear eventually... it may actually happen that way!
Why more focal length? Because GALAXIES, as I know full well you understand! The ED80 ain't cutting it for galaxies, or really any nebulae besides Carina. I look at my Eagle Nebula next to yours and think "nope, this won't do at all I'm afraid". I know your new rig outstrips a 10" Newt but it would be a lot closer. In any case I'd keep the ED80, which combined with the 10" would give a massive range of focal length possibilities.
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