TeleVue 0.25" (6.4 mm) Long Accessory Tube for 2.4" - TLA-0250 12X Binoculars An integrated dew-shield helps to

An integrated dew-shield helps to prevent condensation on the outside of the objective lens

Use your current fork mounted SCT optical tube

Celestron Product Number: 94307

Encoder on the Right Ascension (RA) axis (but not on the Dec axis)

until the battery is depleted and shuts off

TeleVue 0.25" (6.4 mm) Long Accessory Tube for 2.4" - TLA-0250 12X Binoculars An integrated dew-shield helps toTeleVue 0. 25" (6. 4 mm) Long Accessory Tube for 2. 4" The Tele Vue 0. 25" Length Accessory Tube for 2. 4" adds 0. 250" (6. 4 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.