Diagonals

• A great accessory for daytime terrestrial viewing with your telescope
• This 1.25” diagonal produces right side up and left-to-right correct images when used with refractors and catadioptric (Schmidt-Cassegrain) telescopes
• Inserts into 1.25” focusers or visual backs; accepts standard 1.25” eyepieces

• Fits telescopes with 1.25” focusers or visual backs, 90° viewing angle, best for observing objects overhead
• Accepts standard 1.25” eyepieces, Barlow lenses, and other accessories with a 1.25” insert barrel

 Easily add versatility to your astronomical telescope

Great to convert your telescope for terrestrial viewing

Suitable for refractor or catadioptric reflector telescopes

See land images upright and non-mirrored

45-degree angle design for comfortable viewing

Attaches to any 1.25" eyepiece

• 1.25", 90-degree mirror diagonal features sophisticated dielectric coatings with highly efficient 99% reflectivity for peak performance
• Twist-tight clamping mechanism grips inserted eyepieces more securely than typical thumbscrew-equipped diagonals - without scratching!
• Durable dielectric mirror coatings provide higher reflectivity for maximum brightness and contrast
• Machined and anodized aluminum housing features machine-threaded glare baffles to eliminate glare for great performance
• Nosepiece barrel threaded to accept 1.25" filters

Highest quality 2-inch Dielectric mirror diagonal with 99% reflectivity. Diagonal comes with 1.25-inch adapter and SCT adapter.

• Turn any refractor or Cassegrain telescope into a high-performance daytime spotting scope with our Deluxe 45-deg Correct-Image Diagonal
• 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

• 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
• Includes a stepdown adapter, so the diagonal accepts eyepieces, Barlow lenses, threaded filters, and other accessories in both 2” and 1.25” sizes
• Two interchangeable adapters allow you to switch between a Schmidt-Cassegrain thread adapter and a 2” barrel adapter so you can use this diagonal with a wide variety of telescopes