Hide your eyes!
Friends don't let friends go night blind.
Now, I've written about the uh-mazing northern lights but I wanted to give you a little tip.
Cameras are based on the human eye and how it works. For the most part, our eyes are better and more responsive than any camera. Cameras have limitations as far as how much light they can capture and how much dynamic range there is in the lights. While we have that too, cameras are far more prone to get over or under exposed.
Something that cameras can do better than we can is to adjust to the varying degrees of light in a short period of time. If you find yourself in the presence of the northern lights, please don't blind yourself with your camera and limit your ability to see the celestial phenomenon.
Set your brightness on the back of your camera to as dim as you can read it and just don't use your phone at all. When you walk inside to escape the bright lights and your eyes see everything as super dark. Well, that happens when you use your phone or look at your camera at night.
It's a small tip, but I think one that will help you out as you try to capture the auroras for, not only digital permanence but also for the fleeting storage media known as your brain.