Multi-Function: Designed for Reflector telescope; fit for standard 1.25 inch diameter; this sturdy laser unit allows to swiftly and precisely collimate Newtonian telescope; accurate collimation in a few minutes provide more clearer image
Premium metal construction and anodizing aluminium processfor long time use; require one CR2032 lithium battery
Practical Design: Red laser collimation beam with 7 brightness levels; wavelength 635-655 nm; output power: 3.8mW; Complies with Class 3R laser safety standards; much safer for your eyes; only when the optics have been accurately collimated can the telescope offer you its full performance
This auction is for one high quality 2" to M48X0.75 adapter for telescope
Standard 48mm "M48 x 0.75" male thread on one side to connect to diagonal body