Celestron 93573 Dielectric Star Diagonal 2" with Twist Lock

Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and cass grain-type telescopes 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment Includes a Stepdown adapter, so the diagonal accepts eyepieces, Barlow lenses, threaded filters, and other accessories in both 2” and 1. 25” sizes