Photographing the aurora has been a much bigger challenge than I'd originally thought. Everything from knowing (guessing) when it'll happen, finding a location, capture, and processing has turned out to be tricky.
This is the fifth time I've been to this location so far this year, each time the signs for aurora were looking good, only for the magnetic field to collapse, or solar wind to fizzle out, but the good news is that I've found the best place to set up and have level ground for my chair. For this night we were treated to these beams around 10:30 and another show after I packed up (as I had a two hour ride home again).
I wasn't able to see these beams with the naked eye (though others said they did) because I'm extremely colourblind, so it wasn't until I got home and checked through the images that I knew what I'd captured. As I couldn't be sure when the aurora would fire up I had a timelapse running from about 10pm through to 12:30, as I couldn't use the tracking mount I had to use 10" shutter speeds which makes for very noisy images.
Normally for processing astro images I would stack about 10 images for the sky and foreground separately to reduce the noise, but the aurora was changing and shifting so fast that it's completely different in each frame and stacking doesn't work.
Sony A7III, Tamron 17-28 @ 19mm f/2.8, 10" ISO640