M42 VARIABLE EXTENSION 20.5 - 30mm Nadirus 12" any Windows computer or with

any Windows computer or with a smartphone or tablet via WiFi

Optical thickness from M63 thread

If you have other brands' mechanical accessories

150 kg for standard single telescope configuration

99mm and a resolution of 9 MPx

M42 VARIABLE EXTENSION 20.5 - 30mm Nadirus 12" any Windows computer or withExtension tubes are intended for reaching the optimal distances between field flattener reducers and sensors. They are also needed for eyepiece projection. This variable M42 (T2) extension allows to fine tune the distance by fraction of millimetres. The threads (male and female) are the international used M42 threads (T2). The extension consists of three parts (from left to right): Base with long male M42 thread Short locking ring with knurled outer