Quote:
Originally Posted by LewisM
Given the speed of sidereal tracking, do you really think inertia will come into play to any appreciable extent?
Slewing maybe, but most imagers slew once and done for the night.
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The Moment of Inertia impacts the tendency of the telescope to vibrate - systems with a small Moment of Inertia are quicker and easier to damp out any vibrations, and therefore easier to achieve a stable image.