12P/Pons-Brooks 2024-Mar-05 Gianluca Masi
It comes from the sigma-clipping combination of seven, 180-second exposures, unfiltered and unguided, remotely taken with the Celestron C14+Paramount ME+SBIG ST8-XME robotic unit available as part of the Virtual Telescope Project. The resulting frame was carefully processed to show the mind blowing structure of the inner coma, with dust waves.
https://www.virtualtelescope.eu/2024/03/06/multiscale-imaging-of-comet-12p-pons-brooks-pictures-and-time-lapse-5-mar-2024/