Nice photo!
Up here in Alaska we get the Northern Lights all the time, especially in the winter. Even with that much exposure to them we still marvel at the lights dancing across the sky. You'll notice in the photo that they're mostly greenish yellow. Up here in the far Northern latitudes we get green, yellow, blue, red, orange and even purple lights. Usually the farther North you go, the more variance in color and the more vivid the lights. Sometimes the entire sky is shifting around changing shapes.
It's really an awesome sight, ESPECIALLY ON NVG's!!!!!!!!!!!