TeleVue 0.375" (9.5 mm) Long Accessory Tube for 2.4" - TLB-0375 OIII Filters Baader's dielectric coatings deliver an

Baader's dielectric coatings deliver an amazingly high 99% photo-visual reflectivity along with an extremely hard durable surface

deep-space objects will seem to leisurely drift through the field of view of the Sky-Watcher 8" Flextube 200P Collapsible Truss Dobsonian telescope

Ball bearings in both axis of the mount for smooth performance

Eye Relief (mm): 19

It can fit all iOptron mounts

TeleVue 0.375" (9.5 mm) Long Accessory Tube for 2.4" - TLB-0375 OIII Filters Baader's dielectric coatings deliver anTeleVue 0. 375" (9. 5 mm) Long Accessory Tube for 2. 4" The Tele Vue 0. 375" Length Accessory Tube for 2. 4" adds 0. 375" (9. 5 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.