This metal adapter has M30x0.75mm internal thread at one end for the connection of moon filters (eg. ND32, ND64 moon filters) and it has M28.5×0.75mm external thread at the other end for the connection of telescope eyepieces with compatible internal thread on the eyepiece barrel. The adapter can fit telescopes with standard 1.25″ focuser (eyepiece holder).
- Connect light filters with M30x0.75mm external thread (eg. ND32, ND64 moon filters) to eyepieces with M28.5×0.75mm internal thread on the barrel.
- Standard 1.25″ (31.75mm) external fitting diameter for telescope focusers (eyepiece holders).
- Overall length: 20mm
- Material: metal