1) dark skies...
2) not so dark skies like that...
I think DSO/AP is not an option there, but you have to admit, even when the clouds rolled in, it was awe inspiring... I'd personally wouldn't complain about clouds with that going on.
Wow! That was quite something. I really like about 3/4 to the end of the movie when there's a massive green glow above the clouds and the whole scene lits up under as a result, almost like lightning. Must be great to see in real life.
My understanding David is that the eye and its dynamic range is a wonderful tool to see the aurora, the problem is capturing it on a short enough time span on film to not blur it too much... the digital age has helped there.
This is definitily one of the things I want to do before I die. I watched an hour-long ovie of some guys going to capture the aurora... 50 minutes of absolute tedium, 10 minutes of glory.