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A close-up shot of Comet C/2025 A6 (Lemmon) captured by Petr Horálek on Oct 18, from the shore of Seč Lake, Czech Republic.
The G2 geomagnetic storm that day, caused by a CME ejected by the Sun few days earlier, disrupted the comet's long wispy ion tail, but not the shorter and thicker white dust tail.
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Camera: Nikon Z6III, Nikkor 135mm, ISO 1000, f1.8, stack of 40x20s, tracked on Vixen Polarie U.
Here is another outstanding (composite) image of Comet C/2025 A6 (Lemmon) captured by Lukasz Remkowicz in Poland.
The short thick dust tail and the long ion tail can be seen distinctly in this image.
The dust tail, consisting of vaporized ejecta from the comet, points behind the comet's track and slightly away from the sun, while the ion tail, made of ionized gases, points along the streamlines of the solar wind.
Equipment: Canon EOS R, Samyang 135mm F2.0 ED UMC
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https://app.astrobin.com/u/LukaszRemkowicz#gallery
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