Comet 24P and Galaxy Messier 100
Taken by Mike Olason on December 26, 2025 @
Tucson, Arizona
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Camera Used: Unavailable Unavailable
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Date Taken: Unavailable
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Details:
On the morning of December 26 Comet 24P/Schaumasse passed 1/2 degree from the background Spiral Galaxy Messier 100 as observed from Earth. The comet and galaxy were about the same brightness, but the comet was only 0.00000946 light years away while the galaxy that has some 400 billion stars was 56 million light years from Earth. The image is a stack of 30x10s images with no special processing done to any of the images or the final image, this is what the camera observed through a 50mm f/5 refractor for 5 minutes. The upper right inset is a smaller negative image which better shows the large coma of the comet. The lower right inset was used to calculate the magnitude of the comet. The second image labels the brighter galaxies.
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