Here is a Star Trail Time Lapse with Aurora Borealis taken during my Alaskan Aurora Tour/Workshop back in March of 2014.
This was taken at Chena Hot Springs, 60 miles outside of Fairbanks, AK.  The Image is approximately 13 minutes of Star Trails and Aurora Borealis, the Aurora started out dim, but then got so bright it lit up the snow!!!

Taken March 25, 2014 with a Canon 5D Mark II DSLR, Canon L Series 24mm F1.4 lens, set to F2.0, ISO 6400, for 10 second exposures.

Join us on our Alaskan Aurora Photo Tour/Workshop in 2015. The First tour date is Sold Out, but the second tour date still has a few spots available… http://www.galacticimages.com/galactic_trips.html

Best Regards,

John Chumack

www.galacticimages.com