Aurora 2015_10_07 (ex coronal hole)

Ive really enjoyed aurora hunting over the last year. Probably the most impressive display I saw was on 7th October. I saved this picture over to post later.

 

No moon - exceptionally active and bright aurora.

 

I usually take shots at about 10 -12 seconds - this was so bright that I was down to 6.

 

Kp = 6, University of Lancaster magnetometer = 109nT deviation from mean. Expansion phase on stackplots.

 

Source: Coronal hole with high speed solar wind.

Speed = 763.4 km/s

IMF = 7.2nT

IMF Bz = 6.8nT South

Done