Cambodian Sunset with circumhorizontal arc

Sunset Glory

I took this out my apartment window in Cambodia in 2004.  Every so often I would see this effect could in the sunset – a sort of “rainbow” known as a circumhorizontal arc  This is the best one I ever captured.  The effect supposedly occurs when light passes through high-altitude cirrus clouds containing plate-shaped hexagonal ice crystals facing parallel to the earth’s surface.

Aperture: ƒ/4Camera: DMC-FZ1Taken: 27 April, 2004Focal length: 35.2mmISO: 50Shutter speed: 1/800s



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