Tydeux 1.25" Metal Collimating Cheshire Eyepiece Without Laser - Short Version - for Newtonian Reflector Telescope

Professional Instruments: For aligning optics of newtonian reflectors; dobsonian reflectors and schmidt cassegrain telescopes scts. Visual Accuracy: The short collimator for mirror reflector telescopes has a 45 degree plate for easier visual accuracy. Resistant: Item was made by aluminum with crosshair at the bottom allow quick and precise centering of the optics. Easy To Use: Fits in 1.25 inch focusers and easy to use; simply cap the telescope; remove the diagonal and place the eyepiece directly in the focuser. Widely Used: This collimation eyepiece can be used for precisely collimating the newtonian and schmidt cassegrain reflector telescopes for better image quality