Moon Halo

 

A typical 22° Moon halo spotted at 9 p.m. on November 10, 2008 in Cascade, CO. Hexagonal ice crystals in the faint clouds are responsible for this. The 22 degrees refer to a distance between the Moon and the inner edge of the halo. The reddish hue at the bottom is the reflection of Colorado Springs lights.

Another interesting moon halo was spotted on May 20th 2008 at 10.04 p.m. (right thumbnail). This faint double rainbow did not last long - perhaps 10 minutes.

Photo Technical data
Size of the original: 4992x3328 pixels; f/4.5, 6 s, Canon 1Ds Mark II with Sigma 12-24mm 1:4.5-5.6 DG HSM at 12mm.
Left thumbnail - the same photo made from 8 separate images exposed from 0.1s to 10s. HDR image made with Photomatrix Pro software. Cener thumbnail - cropped photo with enhanced contrast showing the rainbow.

Click on the side thumbnails to enlarge.

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