Double Rainbow W/supernumery Arcs
Taken by James R. Westlake, Jr. on September 20, 2018 @ Devils Tower, WY
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  Camera Used: IF if
Exposure Time: 538976288/538976288
Aperture: f/1.0
ISO: 800
Date Taken: 00
 
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While walking the Tower Trail yesterday at Wyoming’s Devil’s Tower National Monument, my wife Linda and I found ourselves swept up in a late afternoon squall. As the rain blew eastward and the Sun came out brightly, I knew that a rainbow was in the offing. I climbed atop a large chunk of a collapsed tower column and there it was – a beautiful double rainbow with shimmering supernumery arcs. The storm receded quickly and the rainbow show, which had attracted quite a crowd, faded after only a couple of minutes and was gone. It was a classic example of right place, right time, right equipment.

The attached image is a 1/800 second exposure taken with a Nikon D700 digital camera at ISO 800 and a 38mm Nikkor lens at f14. It was taken at 5:34pm MDT on Sept 20, 2018.
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