Eric's Astronomy Blog

Sun Pillar: 19 March 2005


A beautiful sun pillar taken at 18:20h on Saturday 19 March 2005 from Conon Bridge. The sky was still bright blue with wisps of high white cloud and the horizon just starting to turn golden.

Horizontal plate type crystals form most sun pillars. Upper sun pillars result when light rays are externally and internally reflected downwards (ref. http://www.sundog.clara.co.uk/halo/pillar.htm)

Nikon Coolpix 5700 camera settings - top image: ISO 100, 0.002sec, f/6.2, fl=21.0mm; bottom image: ISO 100, 0.002sec, f/5.0, fl=8.9mm. The images were processed with Adobe Photoshop CS.


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