Tele Vue 0.8x Focal Reducer Lens Body for Tele Vue NP ScopesThe Tele Vue 0. 8x focal reducer for NP and NPis series telescopes. For up to 43 mm diagonal formats, it's constructed to fit both 2" focuser NP scopes (RAD 1074 required) and the threaded NPis accessories on the input end. Requires CWT 1070, STL 1071 or TRG 1072 to connect to a camera. specifications: Model Number NPR 1073 Optical Modifier or Adapter Reducer Warranty Tele Vue 5 Years