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 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
ED Element High-contrast Optics: The first time you observe an object through one of these eyepieces; you will almost certainly be struck by the brilliance clarity and depth of colour in the image
Long Eye Relief Comfortable Observing: The very generous 20 mm of eye relief means your observing is always completely comfortable for all the focal lengths available in this eyepiece series