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;
High-Quality and Durable: High-quality metal construction and anodizing aluminium process; durable for long time use; require one CR2032 lithium battery Not Included;
Well-Engineered: The laser comes fully adjusted however further adjust if required; it has three openings for adjustment; arranged at 120°; which are initially sealed; small screw cap at the rear of the laser must be first unscrewed to allow this;
Fully Multi-coated: Astromania 40mm Super Plossl eyepiece is engineered with 2 sets of 5 element design with fully multi-coated; the high-quality optics that minimize internal reflections and improve contrast
46 Degree Field Of View: The eyepiece have a wider 46 degree field of view than most eyepieces with a 40mm focal length and 31mm eye relief to see more detail; You can choose eyepiece with the right focal length for your telescope model which are parfocal