Tipped by seagreen

By Eric Bailey, Times Staff Writer
May 22, 2007

YOSEMITE NATIONAL PARK Aristotle took note of this celestial happening a couple of millenniums back. Ben Franklin bagged a sighting or two, as did Mark Twain. The venerable John Muir, chronicler of Sierra mountaintop and meadow, waxed enthusiastic about the nighttime phenomenon.

The hunt for the elusive "moonbow" has long been a nocturnal lure for dreamy hikers, insomniac seamen and intrepid photo buffs. But in the past, seeing one of these nighttime rainbows caused when a full moon's rays bounce off the mist of a departing rain cloud or raging waterfall has been dictated mostly by chance.

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