TeleVue 0.040" (1 mm) Long Accessory Tube for 2.4" - TLF-0040 Celestron Telescope Accessories This also enables you to

This also enables you to configure the diagonal to exactly suit your needs

which provide high contrast viewing while minimizing chromatic aberration

as well as opto-mechanical errors or flexure

Celestron is not only changing the way we experience astronomy

like the Explore Scientific 68 Degree Series Waterproof Telescope Eyepiece

TeleVue 0.040" (1 mm) Long Accessory Tube for 2.4" - TLF-0040 Celestron Telescope Accessories This also enables you toTeleVue 0. 040" (1 mm) Long Accessory Tube for 2. 4" The Tele Vue 0. 040" Length Accessory Tube for 2. 4" adds 0. 040" (1 mm) extension between Imaging System accessories. Extension Tubes are sometimes necessary to position the imaging camera's sensor far enough backwards to match the focal plane location of your scope.