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Re: [ATM] Telescope direct drive

The low cost they claim does not match my idea of low cost.
I like the Nanomotion one though: http://www.nanomotion.com/

/Arjan

> Telescope direct drive may now be possible using a new kind of piezomotor.
> A piezomotor is made using PZT ceramic materials and can operate at
> frequencies of 130Khz with up to 130mm/sec linear velocities. No need for
> stepper motors, servo motors, worm gears, cable drives, roller drives,
band
> drives ,harmonic drives, or other types of gear reduction. A piezomotor
can
> directly move a circular disc, circular sector or produce direct linear
> motion.  Some commercial companies that produce PZT piezomotors are EDO
> corp., Mad City Labs Inc., Nanomotion Inc., Physik Instrumente L.P.

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