This item fits GSO 10:1 focusers for Newtoniona and Refractors. Also meade Lightbridges fitted with 10:1 Focusers.
Description is here
http://www.bintel.com.au/Accessories...oductview.aspx
Has had use for about 6 months with no issues. You can still use the main focus knob manually when fitted.
It is really useful if doing high power observing as the image stays very still when tweaking focus.
Reason for sale. I have upgarded to a Moonlight so not required anymore.
Bintel sell for $245
This is available for $140 plus postage
I will post photos later
Malcolm