We Need Your Help in Solving a Mystery
Half Dome, Sentinel Rock, and Bridalveil Fall after a snowstorm, Yosemite NP, February 9th, 2009
Clearing Winter Storm is my favorite Ansel Adams photograph. To me it captures the majesty and grandeur of Yosemite Valley like no other image.
(I wish I could show the photograph here, but I’d violate copyright laws in doing so. You can click this link to see Clearing Winter Storm. The image shown here is one of mine that was made on February 9th, 2009.)
The funny thing is, no one knows when this famous image was made. Ansel had a notoriously bad memory for dates, and various years have been given by him and others for this photograph, ranging from 1935 to 1944. In his book Examples, Ansel wrote that the image “came about on an early December day,” but again, his memory was not particularly reliable about such things.
A couple of years ago, Don Olson contacted me about dating this photograph. Don is a Professor of Physics and Astronomy at Texas State University, and he and his colleagues have used the position of the moon to find the precise date and time that Ansel captured two images: Moon and Half Dome, and Autumn Moon, the High Sierra From Glacier Point.
