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Fitting out the 3.5m dome - 3


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About this observation
Alan Snook
Time of observation
20/11/2020 - 15:58

This is the Sirius dome rotation motor box being fitted. The motor is 24 volt run at 12 volt to give a sensible rotation rate. The drive pinion engages with a 360-degree toothed rack - 35 feet of it all around the base of the dome. I've stuck a a bit of paper between the rack and the dome so you can pick it out.

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