Markarian's Chain, captured on April 2nd. Every astrophotography session is a learning opportunity. For this image, the main issue was to contend with the gradient (despite shooting at a Bortle 3 location since there's still quite a bit of light pollution to the east and south). I used the method described in https://astrobackyar...ents-photoshop/ with some modification, and it worked out well.
And a wider view showing M87, M88, M89, M90, M91, M58, and others. What an amazing piece of sky - and this is not even the full frame. On the full frame I counted more than 100 galaxies!
EOS R, EF 300 mm f/4L lens, no filter
iOptron Skyguider Pro, QHY mini guide scope, ZWO ASI 120mm mini
161 x 60 sec subs at ISO 3200, plus calibration frames
APT + Stellarium for capturing and plate-solving
DSS for stacking
Photoshop and Starnet++ for editing, gradient removal, and star reduction