After the apo telescope was covered with ice, I put my 100-400 mm f:4.5-5.6 Sony GM zoom lens on the tracker.
Sony A7rIII, 30 x 15 sec exposure, 400 mm focal length at f:5.6.. AstroTrac 360 tracking device, tracker only.
stacked with Registar, processed with Photoshop.
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