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iOptron Specifications

3.5 lbs (1.5kg)
Outer Diameter
3.11" (79 mm)
Inner Diameter
0.75" (19 mm)
1.69" (43 mm)

Reviews about this item

Reviewed by 1 customers


Works fine on a SmartStar G series


from Southern California  -  Casual/ Recreational

Just a counterweight used on a go-to mount that it was not designed for. The screw of the SmartStar G series will accept the shaft of this counterweight. Attach it, adjust and that's all. By adding mass to the G-mount you add damping and that's a good thing for your scope. If the scope is a long refractor this won't help you.

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