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The stabilization is optical, not digital.

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Yes. Optical liquid wedges, driven by electronics, most likely sensing angular deviation via piezo gyros. I was suggesting the electronics controlling the wedges might be digital with an insufficient update rate so as to cause perceptible artifacts.

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17.5" f/5 Discovery Truss
IM715 7" f/15 MCT, Eon-120ED
Lunt 60mm single etalon HA
CG5A coffee grinder, Orion Skyview Alt-AZ
35,19,15 Pans.9 Nag. Meade 24.5 4kSWA, 4.7 5kUWA.
BO-TMB 7mm planetary.
Zeiss Diascope 85
Zeiss, Leica, Canon IS, Fujinon, Nikon binos
One each generic rescue Greyhound (pictured)

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