The Green Flash, as seen from Barbados, Nov 15, 2013, from near Bridgetown, at a beach overlooking the Caribbean. This was not a particularly pronounced green flash but that last bit of the Sun did turn vivid green visually. This frame is part of a multi-frame high-speed sequence covering the 2 to 3 seconds at the moment of sunset. Taken with the 18-200mm lens and Canon 60Da, so not a lot of focal length for the subject.
The Amazing Sky 