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@cosmos4u@scicomm.xyz
2025-12-04 02:27:24

There have been numerous disgustingly fake 'nightscape' composites flooding the web where someone had merely pasted a deep astronomical image of comet C/2026 A6 #Lemmon into some landscape, making it look like it was a giant rivalling Ikeya-Seki oder West - oh, how I hated that. And what a relief that NOIRLab has now posted - noirlab.edu/public/images/iotw - this beautiful and apparently unmanipulated picture of Lemmon over Mauna Kea on 12 November. Yes, it reached 3 point something mag. and had nice tails in the end but it was not a great comet by any means: just look how small and faint it appears next to the southern Milky Way!

@cosmos4u@scicomm.xyz
2025-12-21 00:54:45

There is also a #PUNCH video showing only #comet #Lemmon and its tails in science.nasa.gov/blogs/punch/2 - unfortunately too faint so much tail structure gets lost which can be glimpsed in the full video. But the data are there, waiting for someone to process them for science.

@cosmos4u@scicomm.xyz
2025-12-18 22:05:43

Wanna see an amazing uninterrupted multi-day timelapse of the plasma tail of comet #Lemmon blowing the #SolarWind in October/November? It's happening in the #PUNCH video embedded in the press release science.nasa.gov/blogs/punch/2 - and see also youtube.com/watch?v=6Kk05oIEeJ0 for a version with constellation lines.

@cosmos4u@scicomm.xyz
2025-11-07 20:53:15

And here comes my #Bochum, Germany, #Lemmon number 6: today it was very clear for a change, and the #comet with quite some tail (an effect of the imminent perigee?) showed up nicely - and even faintly in binoculars - at the end of nautical twilight.

@cosmos4u@scicomm.xyz
2025-11-05 18:26:40

After a complicated and one good sighting of #comet #Lemmon from #Bochum, Germany, on 20 and 24 October - see the thread mastodon.social/@PlanetariumBo - more cloudy evenings followed ... but here is the comet again on 30 October, picked blindly out of a suuuuper-crappy sky with 4 seconds at f/2.8 and ISO 1600, right above 9 Herculis. Detection #3 ... and there would be one more today (see the following boost).