The filter mount is precision manufactured from metal and is extremely thin to minimise shadowing and diffraction,the threads on both sides of the filter make it also possible to combine different filters
With removable 2 inch adapter both fit for standard 1.25 inch diameter and 2 inch diameter; red laser collimation beam with 7 brightness levels; wavelength 635-655 nm; output power less than 5mw; can swiftly and precisely collimate Newtonian telescope;
Built with metal material; CR2032 Lithium Cell battery Not include; accurate collimation in a few minutes provide a more clearer image; the telescope can be collimated by just one person;
This adjustment tool can be used in all 1.25 inch focusers; provide with precise instructions in German and English about how to adjust Newtonian telescope using this laser unit; simple to get optimum performance out of telescope
Included: 6X COLOURED EYEPIECE FILTERS(1.25 inch eyepiece Lunar and Planetary filters #25 Red, #21 Orange, #12 Light Yellow, #58A Dark Green, #80A Blue and #56 Green); 1X 1.25" ND96 MOON FILTER