https://en.wikipedia.org/wiki/C/2021_A1_(Leonard)

Equipment configuration and exposure data:

Mount: Orion HDX110 German equatorial mount controlled by TSXPro (Software Bisque) via EQASCOM
Telescope: Celestron RASA 11 V2. 11" Rowe-Ackermann Schmidt Astrograph, 620mm FL, f/2.2
Imaging camera: ZWO ASI2600MC Pro. Gain 100; Offset 21; Filters: Optolong L-Pro.
Image capture scale: AS/P=1.237" (i.e., unbinned). Resized to 33% for display.
Image capture software: Software Bisque TSXPro Camera Addon.
Exposures: 25 @ 60s, interval 60s, beginning 12/05/2021 04:58:31am MST.
Image Position Angle: 0° 44' from north through east
Center RA (2000.0): 14h 10m 57.97s; Center Dec (2000.0): +25° 39' 11.3" at approx 05:39am.
Calibration: 16 bias frames, 13 darks, 9 flat frames; Autoguided.
Guide camera: ZWO ASI120MM Mini. Autoguide software: PHD2 Guiding 2.6.10dev2. Tracking: ~0.49"-0.52" Total RMS.
Post processing software: ImagesPlus6.5; LuminarAI from SkyLum; ThumbsPlus Pro 10.

Source image: Comet C2021 A1 (Leonard) 05-Dec-2021.gif