ZWO 1.25"/T2 helical focuser and micro-focusing unit
The micro focuser provides precise focusing and fits almost any telescope. It can also be combined with an off-axis guider or a telephoto lens. The short focuser is always a help when there is no precise focusing available or focusing is too coarse, as is the case with Schmidt-Cassegrain telescopes, for example.
Construction type:Non-rotating helical focuserConnection telescope side:T2 internal threadConnection camera side:1.25" receptacle with compression ring and T2 external threadMinimum overall height:48.5 mmAdjustment range:6 mm
ZWO helical focuser