Turn any refractor or Cassegrain telescope into a high-performance daytime spotting scope with Orion's Deluxe 45-deg Correct-Image Diagonal. It uses a 1.25" barrel and accepts 1.25" eyepieces and accessories.

• High-quality prism diagonal provides a comfortable, 45-deg viewing orientation for great daytime terrestrial views
• Sporting a 27mm clear aperture, multi-coated prism, our Deluxe 45-deg Correct-Image Diagonal provides sharp views that are right-side-up and correct left-to-right
• 3 arcsecond tolerance prism is 35% larger than prisms used in other models, providing a wider, more pleasing view
• Not recommended for use with Newtonian reflector telescopes