this rare meteorological phenomenon happened on yesterday (AM08:08:20,
2007/7/19) in the sky of Taipei.
i used a 70-200mm VR with CPL filter to shoot from my office's balcony.
please correct me, if the title or description are worng.
to view all photos about clouds 雲.
Sundogs, also known as mock suns or "parhelia", are a pair of brightly colored spots, one on either side of the sun.
A circumhorizontal arc is an optical phenomenon similar in appearance to a rainbow, caused by the refraction of light through the ice crystals in cirrus clouds. It occurs only when the sun is high in the sky, at least 58° above the horizon. The phenomenon is quite rare, since the ice crystals must be aligned horizontally (instead of the more typical vertical alignment) to reflect. (Wikipedia)