Comet C/2023 A3 as seen by the STEREO-A SECCHI HI-1 coronagraph.

Comet C/2023 A3 as seen by the STEREO-A SECCHI HI-1 coronagraph. Striations can be seen in the dust tail, and interactions between the faint ion tail and the solar wind can be observed.
The solar Corona was subtracted out to show the solar wind more clearly. The contrast of the comet tail and the solar wind was enhanced with local histogram equalization.
The vertical lines above Venus on the left and the comet are saturation artefacts from the CCD sensor.

Credit: NASA / STEREO-A / SECCHI HI-1 / Simeon Schmauß
processed from the raw data: secchi.nrl.navy.mil/postflight/hi_1/L0/a/img/20241004/

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My input: these images show aswell how to interpret the antitail of the comet.