A nice gust of solar wind (caused by a co-rotating interaction region, where fast and slow-moving solar wind streams meet), and a wonderfully clear, dark sky. I may have missed the very best of the display - it gradually subsided during the hour or so that I was watching.

All pictures taken with a Nikon D800e and Tokina 11-16mm f/2.8 at 16mm f/2.8, iso 2000, exposures 8-10s