Exploiting the unusual good weather of this season, we imaged the interstellar comet 3I/ATLAS (C/2025 N1 ATLAS) again, recording a much more developed ion tail.
The image above comes from the sigma-clipping combination of 18, 120-second exposures, re…
Interstellar comet 3I/ATLAS (aka C/2025 N1 ATLAS): the ion tail is getting longer
