20100625-IMG_5083-Edit

Monochrome Moonbow, Lower Yosemite Falls

My friend Dawn Endico asked for a black and white version of the moonbow–and I was doubtful; “Seems counter-intuitive, lunar rainbow=color!” was my twittered reply. I was wrong. Lots of drama, and this is closer to what most of us were seeing last night.

It’s important to remember that the human eye is limited at night; depending on the sensitivity of the cones and rods in our retinas, most of us can’t see color clearly at night.

Moonbows do contain a full spectrum of color. But for me, at best I see only faint hues, and most times I just see a white arc. Last night I actually saw relatively intense colors for the first time!