C/2022 E3 (ZTF) 2023-Jan-29 Gianluca Masi

The image above comes from the sigma-clipping combination of 25, 60-second exposures, unfiltered, remotely collected with the “Elena” (PlaneWave 17″+Paramount ME+SBIG STL-6303E) robotic unit available at the Virtual Telescope Project. Such a combination technique dramatically reduces the interference of stars on the comet. The telescope tracked the apparent motion of comet C/2022 E3 ZTF, this is why stars left trails on the background. The image was processed to show both the bright region and the faint ion tail at their best.

https://www.virtualtelescope.eu/2023/01/30/comet-c-2022-e3-ztf-a-new-image-and-time-lapse-29-jan-2023/