Quote:
Originally Posted by gregbradley
I know nothing about the TDM
Greg.
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Greg the TDM is a very high quality encoder which is bolted to the RA axis and attached to a control system. This gives very accurate readings of the absolute RA position and movement faster/slower then sidereal rate is removed via control of motor speed. It does not matter too much whether the PE is uneven or spiked as the encoder updates the control system many times per second which then corrects for errors. Basically a mechanical/software solution for average to poor worms. In theory you could use such a system to flatten the PE curve to AP like precision, in the real world hmmm. I like my EM200, basic as a farm tractor but very precise worms
Mark