Green Flash Over Tyrrhenian Sea

August 03, 2013



Photographer: Giuseppe Pappa 
Summary Authors: Giuseppe Pappa; Jim Foster

The photos above show a green flash sequence as observed from Gioiosa Marea, Sicily, on the Tyrrhenian Sea. I was very happy to witness this aquamarine-colored flash while celebrating my birthday. In essence, green flashes result when atmospheric dispersion produces separate images of each spectral color in such a way that the upper rim of the Sun (upon rising or setting) very briefly flashes green and then blue. Always be careful when looking toward the Sun -- even the setting or rising Sun. Photos taken May 19, 2013.

Photo details: Top - Camera Model: Canon EOS 1100D; Lens: EF75-300mm f/4-5.6; Focal Length: 300mm; Aperture: f/6.3; Exposure Time: 0.0063 s (1/160); ISO equiv: 400. Bottom - Same.