Comet C/2025 A6 Lemmon is in the morning sky east of the Big Dipper. It is approaching naked-eye visibility, but not quite there yet. It is currently at magnitude 6.7 and is predicted to get as bright as magnitude 3 by the end of the month. It has a green head and a blue ion tail.
These images were obtained after 4 am on 02 Oct.
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| Rokinon 135mm f/2. |
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| comet C/2025 A6 Lemmon (circled). Sigma 30mm f/1.4 + softon. |
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| Credit: SkySafariAstronomy.com |
The measured sky brightness was sqml=21.27. The comet was just above the airglow murk along the northeast horizon.
There were other things to look at as well:
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| Sirius rising over Snowshoe Mountain. Sigma 30mm. |
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| Rosette Nebula (and cluster NGC 2244). Rokinon 135mm f/2. |
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| Centered on the Rosette Nebula. (Credit: SkySafariAstronomy.com) |
