Must be viewed on black I feel.
More Aurora from Sweden. With quite a few "Green sky" shots floating around I have tried to spread mine out a bit so as not to overload. This was at the peak of activity over the Swedish forests. It was insanely cold but totally life affirming.
If you would like further information about the 1 to 1, and small group workshops I run in Cornwall, then please contact me through my website. Links to which are on my profile page. www.flickr.com/people/24562498@N03/
Camera Canon EOS 5D Mark II
Focal Length 24 mm
ISO Speed 1600