Homegenous arc
Taken by Allen Lonnquist on February 17, 2017 @
Near St. Leo, MN, USA
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
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Date Taken: Unavailable
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Details:
Last night there was only a greenish glow along the north horizon. This evening, there was a distinct homogenous arc, green, and about 3rd magnitude. Quiet and faded away by 10:30pm CST.
The arc was about 5 deg wide. Its lower rim was about 2 deg above horizon, and the arc and its glow extended to about 10-12 deg altitude.
Photographer's website:
No URL provided.
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