Not the circle that you sometimes see around the moon, but an actual rainbow caused by the moon. One of the places where you can actually predict this is in Yosemite during the spring. The rain runoff will cause a LOT of spray on the lower Yosemite falls, and the moon will rise looking right up the falls. University of Texas actually has predictions about it. I went with a friend who has done this before (with our respective wives). It is a HUGE challenge, since you are put right in the path of a LOT of wind and a LOT of water. (You better take steps to get some rain gear...) When you see it naked eye, you will slightly see a grey arc. But when you do a 3 minute exposure, well: Because of haze, there was a lot of reflection of the full moon in the night sky, so when you "develop" the image, it almost looks like daylight - except for the peculiar shade of blue for the sky. I've got plans to try out a method where I can *prove* that it's a night shot, but I estimate it would take about 5 hours to get it done. We'll see........
Thats very nice. I just spent too many hours photographing the stars, trying to catch meteors. ; Got a few but nothing amazing. ; Made a few star trail shots. ; Also, nothing amazing.
Very nice...I'd love to shoot one of those too - though I'd love to shoot anything in that park! ; Haven't been there in over a decade...and wasn't really that into photography last time I was there, so I've only got a few snapshots.