Comet Lemmon 10.19.25
Taken by Jan Curtis on October 19, 2025 @
Cheyenne, Wyoming
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2025:10:19 23:33:11
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Details:
I traveled 6 miles north of Cheyenne under Boltle 4 skies to get away from city sky glow. Skies were perfectly clear and moonless with a slight breeze. I was able to see Comet Lemmon for the first time naked-eye and was able to record its ion (blue) and dust (yellow) tails.
This is a 45x25s stack using PixInsight, Fujifilm X-T5 and Nikkor 180mm lens. My setting were iso 1600, f-stop f/4.0, raw. I fixed comet and dimmed stars.
When I took a stack of 51x25s at iso 3200 and f/2.8, red argon dominated and rended the stack useless. However, when using a 10x25s subs, fixed on stars, the image turned out acceptable.
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