Gday Geoff
Quote:
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don't touch the telescope or pier when in use
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Thats a given,
but remember, you can also get motor vibrations from the mount itself, or ground vibrations from yourself, nearby roads/rail etc.
Random vibrations wont ( normally ) cause resonances, but a constant motor speed might ( highly unlikely but possible ).
ie To properly design for vibration, you need to look at damping vibrations as quick as possible ( which is what the oil slurry is supposed to do ), or preventing vibrations from causing a resonance, and for the latter, you need to know the frequency of the resonator. Again not simple to do properly.
Andrew