Glider Optics ~ Captured by Mike Rubin (more images) October '09 on a wave flight over Deeside, Aberdeenshire, Scotland. Images ©Mike Rubin, shown with permission.
Left: The outer droplets of a gloud diffract and backscatter sunlight to form a glory. At its center is the glider's shadow.
Below: A gap in the cloud deck reveals a rainbow fragment.