Total Solar Eclipse 2017 08 21th
Taken by Philippe Morel on August 21, 2017 @ Jackson Hole, Wyoming, USA
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  Camera Used: SONY ILCE-7S
Exposure Time: 1/6
Aperture: Unavailable
ISO: 640
Date Taken: 2017:08:31 23:38:01
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Maksutov Telephoto Lens MTO 500 (focal lenght : 500mm, F:D = 6,3) placed on a Star Adventurer equatorial mount pointed by night on the Polaris.

The aim of my project was to take about 100 pictures during the totality with a large choice of exposures duration.

To obtain a sufficient number of pics of the outer corona, the exposures duration were stopped at 1/20e sec and the sensibility was enhanced to 3200 ISO.

The camera was a Sony Alpha 7s.

The treatment was : 2° radial blur on 65 pics, 5° radial blur on 80 pics, 10° radial blur on 74 pics and 15) radial blur on 5 pics.
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