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;
Metal filter cell threads directly into the 1.25- inch barrel of your telescope eyepiece
Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming
