Two nights ago, I was observing and imaging the comet C/2023 A3 Tsuchinshan-ATLAS at the Deep South Star Gaze near Sandy Hook MS. The skies there are much darker than those of Mobile, and that resulted in an unexpected issue. When I aligned the subs on the nucleus, the profusion of trailed background stars nearly overwhelmed the comet. This image is a stack of over eighty 30-second subs taken through red, green and blue filters, aligned on the background stars. Now that the comet is receding into interstellar space, it's motion with respect to the background stars slowed significantly. The displacement in the image is the result of that, since I do not have software that allows the separate processing of the stars and the comet yet. I will archive the data for the day when I get it to enable re-processing of the data I acquired on the comet. An 80mm Astro-Tech EDT apochromatic refractor, ZWO 533MM monochrome camera and Skywatcher EQ6R-Pro mount were used to acquire the image data. Processing was accomplished with Nebulosity and SIRIL, post processing with Photoshop.
Taras