Tuesday, October 28, 2025

Monday-evening comet

Comet C/2025 A6 (Lemmon) is still visible, even with the 5.8-day moon high in the south last night.  I watched it with a 2x54 wide-angle binocular and a 60mm f/6 refractor at 12x.  Some wide-angle photographs were obtained with an old Minolta MD 85mm f/2 lens on a Sony A7iii camera and an Olympus 75mm f/1.8 lens on a E-M5iii camera.

Minolta MD 85mm

 The triangle of stars to the right of the comet are Gamma, Kappa, and Beta in the constellation Serpens Caput.

Olympus 75mm 

 
Olympus 75mm

Even with the moonlight it is still possible to pick out the two distinct tails: the narrow blue ion tail and the broader yellow dust tail.

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