Used Tele Vue 3.5" Extension Tube Star Adventurer *We will continue to optimize

*We will continue to optimize the product based on test results

This includes:

StarSense Explorer uses patented technology and your smartphone to determine exactly where the telescope is pointed in the night sky

With the push of a button

A re-engineered slot-fit chassis provides a tighter mechanical interface between the top and bottom covers

Used Tele Vue 3.5" Extension Tube Star Adventurer *We will continue to optimizeCondition: This is a used Tele Vue extension tube. It is in excellent condition with little sign of wear on the body. There are no scratches. Model with two tension screws. Description: Telescope drawtube extensions help your telescope reach focus when not using a diagonal as is the case in many imaging applications. They are also useful (with or without diagonal) when you need more out travel for focusing on nearby terrestrial subjects. Our extention