C/2023 A3 (Tsuchinshan-ATLAS) 2024-Jan-24 Gianluca Masi

The image above comes from the sigma-clipping combination of ten, 180-second exposures, unfiltered, remotely taken with the Celestron C14+Paramount ME+SBIG ST8-XME robotic unit available as part of the Virtual Telescope Project.

In the image, having a scale of 0.75″/pixel, the comet clearly shows a coma and an obvious tail pointing NW. We measured it as bright as mag. 15.8 (unfiltered, R-mags for the reference stars from the Gaia DR2 star catalogue). At the imaging time, the target was about 30 deg. above the horizon, with the full Moon setting.

https://www.virtualtelescope.eu/2024/01/24/comet-c-2023-a3-tsuchinshan-atlas-an-image-24-jan-2024/