203mm Parabolic Primary Mirror with a 750mm focal length, devised for optimal light gathering and clarity in your astronomical observations. Includes a 70mm secondary mirror, featuring an aluminum-coated surface for enhanced durability and scratch resistance, perfect for DIY telescope projects. Easy installation with a center mark on the primary mirror, allowing for precise optical calibration using either an eyepiece or machine collimator. Ideal for amateur astronomers and DIY enthusiasts looking to build or upgrade their Newtonian reflector telescope for enhanced viewing experiences. Versatile options available: choose from the primary mirror, secondary mirror, or complete accessory set to suit your specific astronomy needs.