Used Tele Vue 3.5" Extension Tube Newtonian Outer Material: 900 Denier Polyester

Outer Material: 900 Denier Polyester Walls- Foam EPE Foam (16mm thick) Internal material PP webbing Zippers: Nylon Zippers with cord pulls Included Accessories 3" Celestron window sticker (part of label) | Shoulder strap Compatibility ALL 9

this filter significantly improves image quality

9 with included eyepiece Relative Brightness 16 - 1

These "C" filters have a wider (for a narrowband filter) bandpass than the other two filters

the Astronomik Luminance filter with the widest spectral window should be used

Used Tele Vue 3.5" Extension Tube Newtonian Outer Material: 900 Denier PolyesterCondition: 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