Quote:
Originally Posted by [1ponders]
Looks very tempting. I wonder what it's periodic error is and how easy it is to polar align. 300D would look nice sitting at the top of one of those 
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The drive system is by Sidereal Technology and has the option to chain two units together to also drive field de-rotation motor for altaz photograghy and focus motor. If you can buy your own gearboxes the setup is only about $650 USD with two servo motors

It will do GOTO as well in conjunction with a laptop or Argo Navis.
http://www.siderealtechnology.com/
Mark