Search query: celestron prism

Product: Dielectric Star Diagonal 1.25" with Twist Lock
Brand: Celestron
Color: Black/Orange
Relevance: Substitute
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 cassegrain-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
Accepts standard eyepieces, Barlow lenses, threaded filters, and other accessories with a 1. 25” Barrel