2009 Total Solar Eclipse - Corona Composite

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Thin to moderately thick clouds were present throughout the period of totality, which prevented the outer portions of the corona from being recorded.

Equipment: Borg 77mm ED refractor/Kenko SkyMemo mount/Nikon D300
F-ratio: f/6.5
Exposures: 1/1000, 1/500, 1/250, 1/125, 1/60, 1/30, 1/15, 1/8, 1/4, 1/2, 1, and 2 seconds at ISO 200
Date: July 22, 2009
Location: Wuhan, China

Technical Notes: The exposures were aligned and combined using Photomatix 3.1 to create a 32-bit high dynamic range image. The resulting image was processed using Photoshop CS3. The original image was duplicated and then a Radial Blur of 10 pixels applied to it. This blurred copy was subtracted from the original image and the resulting image was then combined with the original image using Linear Light and again using Overlay to enhance detail.

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