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considering the small field of view and sometimes less-than-ideal illumination
The Type-5 16mm is a smaller
The Celestron SkyMaster 20 x 80 Binoculars features high quality BAK-4 prisms and multi-coated optics for enhanced contrast
5" Focuser Extension Tube Features
or the quality that lives in each Explore Scientific 68 Degree Series Waterproof Telescope Eyepiece
Tele Vue Focuser Extension Tube - 2" - X2C-0008 instock considering the small field ofAbout the TeleVue 2" 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 2"
