Comet SWAN25B
Taken by Mike Olason on September 13, 2025 @
Tucson, Arizona
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Details:
On the evening of 2025 Sept 13 UT, managed to grab one 10 second image of Comet SWAN25B between showers, 2 degrees above the horizon in fading twilight hazy skies below a cloud deck. Due to the low altitude and hazy skies could not see a tail and could only see the brighter part of the comet's green coma. Using the 8.9 magnitude star as a reference calculated the coma that I could see at magnitude 8.1, undoubtedly, the comet is much brighter. In the coming weeks the comet will slowly get higher in the evening sky for observers in the Northern Hemisphere.
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