The sky was bright with the first-quarter moon (6.8-d) on Tuesday night. Even so, I was able to photograph three comets using an old Canon FD 300mm f/4 L lens with a Metabones 0.71x Speed Booster on an Olympus E-M1iii camera. The resultant focal length is 213 mm @ f/2.8. The camera was mounted on a ZWO AM3 harmonic drive.
I followed comet C/2025 A6 (Lemmon) visually with a 2x54 wide-field binocular. The magnitude-4 coma was easy to see and a short trace of the tail was visible in the moonlight.
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| comet C/2025 A6 (Lemmon). Canon FD 300mm f/4 L @ 213 mm f/2.8. |
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| about to set behind the Bristol Head ridgeline |
Comet C/2025 R2 (SWAN) is currently in the constellation Aquarius. It is about magnitude 7 and is decreasing in brightness.
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| comet C/2025 R2 (SWAN) |
Comet C/2024 E1 (Wierzchos) is in the constellation Hercules. It is about magnitude 13 (very faint), but is increasing in brightness.
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| Comet C/2024 E1 (Wierzchos) is the green blob at the center of the image. |
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