2017_09_08_Aurora (ex CME AR12673 X-class 9.3) 2
Fighting cloud and a full Moon tonight so pleased to catch this. Arc to 10 degrees with some faint ray activity to the right.
This is from the amazing X-class flare and CME produced by AR 12673 which was just a very unimpressive unipolar group last Saturday when I imaged it but it grew rapidly in size and complexity.
Samyang 24mm f/1.4 @ f/2
University of Lancaster magnetometer 309.7 nT deviation from mean.
Bt = 32.9
Bz = -29.5