Encore - Double Pink Rainbow Over Glen Ashley, South Africa
October 06, 2018
Today and every Saturday Earth Science Picture of the Day invites you to rediscover favorites from the past. Saturday posts feature an EPOD that was chosen by viewers like you in our monthly Viewers' Choice polls. Join us as we look back at these intriguing and captivating images.
The photo above showing a high-arching pink rainbow was captured at sunset near Durban, South Africa. The camera is facing toward the anti-solar point. Like the setting Sun, the rainbow colors we're familiar with acquire red or pink hues once the Sun dips close to the horizon. This is because as the Sun sets (or rises) the increased path length sunlight takes through the atmosphere acts to scatter out the green, blue and violet colors from our view. The partially formed secondary bow having a radius of approximately 51 degrees can be seen about 9 degrees outside of the primary bow. Note the dim anticrepuscular rays (right side of primary and secondary bows) as well as the collection of reddened light near the center of the primary bow. Photo taken on October 22, 2012.
Photo Details: Canon 5d MKII camera; 16-35mm lens; f/2.8; ISO 200; 1/2 sec. exposure; photo taken at 5:54 p.m.