Not quite the aurora

Although I live in the country I've never seen the aurora from here.  But, last night coming back from an excellent dinner at The Foveran I thought I could detect a faint glow in the north so I got the camera out.  With a long exposure, stitching two images and some creative adjustments I think I can just detect the faintest green tinge.  This it looking north, the moon is out but not visible on the left.  The orange glow on the left is Kirkwall, 10 miles away.
Even if it's not the aurora, I quite like the image of the night sky.