Sep. 7th, 2014 at 7:23 PM

Moonbow over Hawaii
One of my favourite astrophotographers snapped a fortuitous moonbow shimmering over a west facing beach on Molokai last June. Like rainbows, the optical effect is due to internal reflection of moonlight by water droplets. Luna, near full, was rising behind the photographer.
Image credit: Rogelio Bernal Andreo
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