Anticrepuscular Rays Over Attica, Greece

June 24, 2019

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Photographer: Dimitris Sagiakos
Summary Authors: Dimitris Sagiakos; Jim Foster

Anticrepuscular rays are observed at the opposite side of the sky from where the Sun is setting or rising. Although they seem to converge, this is an optical illusion. In reality, they’re parallel to one another.

They typically form when sunlight is blocked by clouds near the horizon. Gaps in the clouds, particularly the turrets in cumulonimbus clouds, permit some light to pass through – these are bright beams or lanes that occur on the same side of the sky as the Sun. However, if the sky is hazy or dusty, the rays may extend across the entire sky. In this case, the rays were more obvious on the opposite side of the sky from the Sun. Photo taken on June 10, 2019.

Photo Details: Camera: NIKON D7200; Software: Adobe Photoshop Lightroom Classic 7.0 (Windows); Exposure Time: 2.500s; Aperture: ƒ/5.6; ISO equivalent: 200; Focal Length (35mm): 21