The green light of ionized oxygen ruled the night as bright aurora on an otherwise black and moonless night. This aurora was intense enough that no artificial light was needed to see one's way about.
This green is the most common form of the aurora and it is caused by oxygen glowing at about 50 to 100 miles high. We see the green type of aurora almost always and other colors are very rare in comparison. Don't be fooled though, its commonality does not make it any less spectacular to view.
Tonight was on the cool side at around minus 25 but for this part of Alaska at this time of year it was nearly a heat wave as temperatures in the minus 50 to minus 60 range are not that uncommon here. The cold was the result of clear skies as clouds tend to hold heat in. Many people feel that the cold causes the aurora but it really has no real connection to the phenomenon. The cold brings the clear skies and it is the clear skies that allows the aurora to be observed but the aurora occurs weather we can see it or not.
I used a 6x6 medium format camera with a 30mm fisheye lens and FujiSuperG 800 film to record this beautiful display.