Tele Vue Focuser Extension Tube - 3.5" - X3C-0009 Solar Eyepieces 99% Reflectivity

99% Reflectivity

with a field stop of 1

Edge-blackened lenses for high contrast and are parfocal with most eyepieces

Color: Gray

Note: Bino-Viewers may not function with some short focal length refractors and Newtonian reflectors without modification

Tele Vue Focuser Extension Tube - 3.5" - X3C-0009 Solar Eyepieces 99% ReflectivityAbout the TeleVue 3. 5" Focuser Extension Tube TeleVue 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. TeleVue Extention Tubes slip into any telescope''s 2" drawtube and includes brass clamp rings to prevent marring of accessory barrels. TeleVue