Planewave CDK12.5; AP 1100GTO Mount
QHY600M, - Antlia Pro Broadband and 3.5 nm Ha Filters
L: (42 x 180s, Bin 1, Gain 26)
H: (20 x 720s Bin 1, Gain 26)
R,G,B: (26,27,27 x 210s, Bin 1, Gain 26)
Total integration time = 10.8 hrs (Apr 30, May 1, 2025) Vancouver Island, BC, Canada

From left to right, NGC 5981, 5982, and 5985 present themselves as a galactic sampler - an edge on spiral, an elliptical, and another almost face on, hairy looking spiral.
The elliptical galaxy in this image is particularly interesting as it seems to exhibits shells that stepwise increase in brightness towards the central black hole. Apparently this shell like behavior is caused the the wanderings of a smaller galactic nucleus that was gobbled up when a smaller elliptical merged with a larger one.
Recently, I presented to my local (Victoria, BC) chapter of the RASC a description of spiral galaxies based on thermodynamics and fluid mechanics. This dispenses with a lot of the magical unicorns often used to describe how they work and replaces them with explanations that are more grounded in science. I have posted this presentation in two youtube videos - Part A and Part B, or alternatively, they can be viewed at APRealSpace.com.