A 0.8x Reducer for all NP and NPis scopes used with imagers of up to APS-size format. For NP101/127 (non-is) it requires the RAD-1074 Reducer Body Adapter for 2 inches focusers. On Tele Vue is scopes you need CWT-1070 (Canon Wide T-Adapter for 2.4 inches Focusers), STL-1071 (SBIG STL Camera Adapter), or TRG-1072 (Standard T-Ring Adapter) to connect to camera. Model NPR-1073