During a trip to Iceland, I made in oct 2015, two geomagnetic storms took place on 6/7 and 7/8. This resulted in the most spectacular aurora show I ever witnessed. In the 10 days of the trip there were 4 clear nights and fortunately, tthe impact of the sun's CME hhappened at that moment.
Here are some pictures, taken with a wideangle lens (12-24jmm) on a dd camera. Exposures vary between 6 and 30 seconds. Enjoy this colourful display