Comet E3 and a faint aurora

With a frosty evening, no Moon and clear skies, I thought it might be worth crawling out of bed at 04.30 to see if I could improve on my previous attempts to photograph this year's comet. Sadly, despite using GPS tracking, the results were still very unimpressive: just a woolly green blob with a hint of a tail. A long exposure of the northern sky revealed a hint of an aurora...