Visibility I / V
When we finally got a completely starry sky on Saturday night, I decided to try shooting the Milky Way again. It worked out quite nicely and the northern lights also peek into the picture a bit. But then I noticed the purple and pink arcs on the left in the picture, what could they be?
The picture was taken at Utsjoki, not a little more to the northwest than to the north. Camera Sony a7s and lens Sigma 20mm and the settings were ISO 16000, f2.8 and exposure time 8sec.
There are a few additional photos of the same, taken within five minutes from that same spot, and the arches are visible in all of them. The second picture has been processed a little harder so that they can be seen better.