5x300sec exposures. Converted, calibrated, aligned, stacked in ImagesPlus (now a free software). Photoshop used to correct color balance, increase contrast, fix bad pixels, crop.

It is exciting to see Comet 2021 A1 Leonard brightening! This is a great binocular object now, and even better when it joins Venus and crescent moon in the low twilight evening sky Dec 16-20. Since the mount was set to track the comet, the stars are streaked during the 25 minutes of total exposure. This comet is really moving through the inner solar system.