The VixenTele-Extender is used in place of a barlow lens with Newtonian reflector telescopes. The 800mm focal length of the R200SS becomes a 1500mm f/7.5 combination. The Tele-Extender has T-mount threading upon the end, allowing you to attach a SLR-type camera directly with the addition of your camera system's specific T-mount adapter.
In the Box
Vixen Optics Tele-Extender for the Vixen R200SS Newtonian Reflector Telescopes - Extends Focal Length for High-Magnification Viewing/Imaging