Sun pillars and sun dogs

Thanks to Candy Doyle for these two shots of sun optics  taken in the past few days.

The first picture is s sun pillar, a shaft of sunlight seen when the sun is low in the sky, caused by reflection of the sunlight by the sides of the columnar ice crystals falling with their long axes horizontal.

Sun Pillar

Sun Pillar


The second is a sun dog, a colored spot often called a second sun  at the same angular elevation of the sun. It is caused by the sun’s rays refreacted by ice crystals in the clouds.

Sun Dog

Sun Dog                                    Photos by Candy Doyle

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