The big dipper and north star is the subject of the Flag of Alaska (designed by 13 year old Benny Benson in 1927, when Alaska was still a territory). I thought it would be nice to have an aurora photo with the constellation as a centerpiece. Taken on Murphy Dome.
sigma 17-50 mm f/2.8 ex dc os hsm
Focal Length: 17 mm
Shutter Speed: 20 sec