Twilight Rays Over Hawaii's Big Island

September 13, 2013


Photographer: Bill Golisch
Summary Authors: Bill Golisch; Jim Foster

In the clear air over Mauna Kea (13,803 ft or 4,207 m above sea level) on the Big Island of Hawaii, shadows and rays are often spotted near sundown and sunup. As shown above, these odd shaped crepuscular rays were captured next to the dome of the Keck Observatory moments after sunset. The cumulonimbus cloud turrets above the recently set Sun, likely building over the island of Maui, are responsible for the off-kilter darkened lanes. Photo taken on July 23, 2013.

Photo details: Camera Maker: Canon; Camera Model: Canon PowerShot A720 IS; Focal Length: 17.152mm; Aperture: f/3.5; Exposure Time: 0.017 s (1/60); ISO equiv: 80.