J.Poyner wrote
I put a post on a met website about the sundogs etc. got a reply from the
guy who runs this website explaining it all........the rainbow thing was a
Circumzenithal arc....(see his photo)...so there you have it.

http://www.sundog.clara.co.uk/halo/cza.htm

John.

Do you have any photographs?

Les Cowley
Atmospheric Optics:
http://www.sundog.clara.co.uk/atoptics/phenom.htm