Earth's Shadow Edge Colors
Taken by Alan Dyer on October 8, 2014 @
Writing-on-Stone Park, Alberta
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Camera Used: Canon Canon EOS 60D
Exposure Time: 5/1
Aperture: Unavailable
ISO: 800
Date Taken: 2014:10:08 18:43:49
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Details:
A high dynamic range stack of images to encompass the range of brightness from the bright portion of the lunar disk (at right here) still just in the penumbral shadow, to the dark portion of the disk at left deep in the umbral shadow. I’ve processed the image for enhanced contrast to bring out the color variation along the umbral shadow boundary where it appears blue, from sunlight filtering through the high atmosphere of Earth in the stratospheric ozone layer.
I shot this at the October 8, 2014 total lunar eclipse, from Writing-on-Stone Park in southern Alberta. This is an HDR-stack of 11 images at 2/3rds stop intervals from 5 seconds to 1/5th second, all at ISO 800 with the Canon 60Da and 80mm f/6 apo refractor. Stacked in HDRPro in Photoshop with 32-bit ACR tone-mapping. I shot the images 7 to 5 minutes before totality began. Light cloud and haze added the sky glow.
Uranus is to the left at the 9 o’clock position as a blue star.
Photographer's website:
http://www.amazingsky.net
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