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Astronomy Picture of the Day
@apod@reentry.codl.fr  ·  activity timestamp last week

Comet Lemmon over the High Tatras

Image Credit & Copyright: Tomáš Slovinský & Constantine Themelis

Explanation: Comet Lemmon putting on a show for cameras around the globe. Passing nearest to the Earth this week, the photogenic comet C/2025 A6 (Lemmon) is now extending two long tails : a blue ion tail and a white dust tail. The ion tail is pushed away from the Sun by the ever-present by ever-changing solar wind, and shows structure also created by how much gas is ejected at any one moment. It glows because it is ionized by high energy sunlight. The dust tail is pushed away from the comet by sunlight and shines by reflecting sunlight. The featured image is an enhanced composite of 50 exposures all taken two days ago from Mlynica, Slovakia. The mountains in the foreground are the High Tatras that partly separate Slovakia from Poland. Although Comet Lemmon is best visible in long camera exposures, the shedding ice ball has become faintly visible in northern skies even to unaided eyes through dark skies toward the west after sunset.

#apod

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Poland - Wikipedia

Slovakia - Wikipedia

Mlynica - Wikipedia

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Tomas Slovinsky on Instagram: "Comet Lemmon over the High Tatras ☄️

A truly unique capture of comet C/2025 A6 Lemmon, which has been drawing the attention of skywatchers and astrophotographers around the world in recent weeks. This dreamy scene was photographed from the village of Mlynica in Slovakia, where the comet appeared perfectly aligned with the dramatic peaks of the High Tatras.

From left to right, you can see the majestic Slavkovský Peak, the sharp Prostredný hrot in the center, and the iconic Lomnický Peak on the right, home to the legendary observatory where many comets were once discovered.

The comet itself, with its spectacular tail stretching across the night sky, is a true celestial gem. This image is the result of a wonderful collaboration with my talented friend and astrophotographer @constantinethemelis whose expertise in processing helped bring this shot to life.

The final composition is a stack of 50 exposures captured with a Sony A7III (astro-modified) and a Samyang 85mm lens (30 s, f/1.4,ISO3200)
Date: 20th of October 2025
#cometlemmon #hightatras #slovakia"

1,323 likes, 52 comments - slovinsky.art on October 21, 2025: "Comet Lemmon over the High Tatras ☄️ A truly unique capture of comet C/2025 A6 Lemmon, which has been drawing the attention of skywatchers and astrophotographers around the world in recent weeks. This dreamy scene was photographed from the village of Mlynica in Slovakia, where the comet appeared perfectly aligned with the dramatic peaks of the High Tatras. From left to right, you can see the majestic Slavkovský Peak, the sharp Prostredný hrot in the center, and the iconic Lomnický Peak on the right, home to the legendary observatory where many comets were once discovered. The comet itself, with its spectacular tail stretching across the night sky, is a true celestial gem. This image is the result of a wonderful collaboration with my talented friend and astrophotographer @constantinethemelis whose expertise in processing helped bring this shot to life. The final composition is a stack of 50 exposures captured with a Sony A7III (astro-modified) and a Samyang 85mm lens (30 s, f/1.4,ISO3200) Date: 20th of October 2025 #cometlemmon #hightatras #slovakia".
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