Diamond Ring and Darkness

August 25, 2017



Photographer: Rob Sheridan
Summary Author: Rob Sheridan

My family went camping near Idaho Falls, Idaho for Monday's amazing eclipse. The top photo shows the diamond ring effect just before and after totality. The diamond ring effect occurs in the seconds before and after totality when the only direct sunlight coming to earth is transiently channeled through mountain valleys on the profile of the advancing or retreating moon. During totality, the sky became so dark that automatic car lights came on as can be seen in the bottom photo. Photo taken Monday, August 21, 2017.

Photo Details: Top- Camera Maker: NIKON; Camera Model: COOLPIX S9700; Focal Length: 48.4mm (35mm equivalent: 271mm); Aperture: ƒ/6.3; Exposure Time: 0.017 s (1/60); ISO equiv: 125; Software: Windows Photo Editor 10.0.10011.16384 . Bottom: same except - Focal Length: 4.5mm (35mm equivalent: 25mm); Aperture: ƒ/3.7; Exposure Time: 0.067 s (1/15); ISO equiv: 400.