In reply to Tom Last:
I've see
> Anyone ever seen a lunar rainbow? I saw one at Sheildaig, looked a lot like a fogbow but at night. Incredible sight, thought I was hallucinating.
I've seen them once or twice but not got any photos.
I once saw a Brocken Spectre by moonlight, coming off the Ben down to the CIC with a full moon behind me. Sadly, again no photos, but a remarkable sight.