Tele Vue Focal Reducer Body Adapter for 2" FocuserReducer adapter allows Televue Imaging System reducers to be used on standard 2" focusers. You need this adapter if you plan to use Televue's NPR 1073 or RFL 4087 0. 8x Reducers on an NP101, NP127, or TV102 telescope. Reducer adapter allows Televue Imaging System reducers to be used on standard 2" focusers. This adapter can be used to mount the . 8X reducers (TE NPR 1073 and TE RFL 4087) to the 2" focusers of the non "is" versions of NP 101, NP 127,