SKY-WATCHER DIAGONALPRISME 90GR. DIELECTRIC 1,25″

Available in either 1.25″ or 2″ sizes the mirrors inside these diagonals have undergone a special high-reflectivity multi-coating process, allowing them to reflect 99% of the precious gathered starlight, providing exceptional brightness and contrast.  (Standard diagonals typically reflect 90-95% of light).