You're biased due to your latitude. Far-north aurorae can be MUCH brighter than what we are used to. Shorter exposures are indeed possible. Our aurorae typically hug the horizon, where atmospheric extinction takes a heavy toll. I'm reminded of a line from an old Jimmy Buffet song: "Don't try to describe a KISS concert if you've never seen one" and he's right, I'm at a loss for words. C. --- Joe Bauman <bau@desnews.com> wrote:
I don't know, but they look kind of odd to me. It's hard to reconcile their sharpness with the length of exposure that's needed. Some of them just look strange. -- Joe
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