Aurora seemed to have multiple layers, really bright at the bottom and the it faded out at the top. After about 15m condensed down to one main band then had various streaks cycle in and out. Not as bright as some display but well worth enduring the cold temperatures to watch and photograph it.
Photo Details: Nikon D3 - 30 second exposures / ISO800 / F2.8 / 15mm
Short time lapse viewable at: http://www.youtube.com/watch?v=3K8gt8KNrTg