Sidereal Technology have developed a drive control for new style direct drive system for Telescope mounts.
The advantages for telescope control are :
1. Completely eliminate all backlash
2. Completely eliminate all periodic error
3. Completely eliminate all non-periodic error
4. It makes a fast, responsive system, able to counteract small wind gusts
5. Fast, smooth slew speeds, up to 45 deg's per second
Read all about it :
http://www.siderealtechnology.com/Di...InProgress.pdf
Great to see some new innovation.