Fixed an out of focus with my OTA. Works great. ty!
The item is exactely what i need
Ordered this item from OPT to use on a Celestron 80mm travel scope, to give extra travel of the focuser rack. The item has performed as promised. This unit also allows one to use a 2X or 2.5X "Tele-vue" power mate type barlow, and ZWO ASI-120mm camera for astrophotography, by reaching prime focus before you run out of travel length on the focuser. The item is modestly priced and delivers as well, thanks OPT tech staff. D.H.
Great experiencie. I would definitely buy from OPT again.
Hats off for the customer service. I can now place my barlow before the diagonal as i have more back focus.