Bresser Telescope Drive Master Tracking Unit

[Hans Tucker]

Sorry if this has been discussed before but it looks interesting.

http://www.telescopehouse.com/acatalog/info_0721000.html

[Wavytone]

Yes it has come up before. Personally I am fairly skeptical of their claims (mysterious "black box" with no rational explanation of how it works sounds suspiciously like snake oil to me) but happy to be proven wrong if I saw one in action.