Multi-Function: Designed for Reflector telescope; fit for standard 1.25 inch diameter; allows to swiftly and precisely collimate Newtonian telescope; accurate collimation in a few minutes provide a more clearer image
High-Quality and Durable: high-quality metal construction and anodizing aluminium process; durable for long time use. Require one CR2032 lithium battery "Not Included"
Practical Design: Red laser collimation beam with 7 brightness levels; wavelength 635-655 nm; output power: less than 5mw; much safer for your eyes; only when the optics have been accurately collimated can the telescope offer you its full performance
1.25 inch 4mm plossl eyepiece set; gives the widest viewing field along with extra sharpness and long eye relief
4-element plossl design; has a approx 50 degree AFOV; perfect for broad-field lunar observations; medium-sized star clusters; and a wide range of cloudy nebulas and deep sky targets