Top 10 Best Dielectric Mirror

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Excellent Quality Dielectric Diagonal Mirror Star Diagonal - 99 ReflectivityProvides a Comfortable 90 Degree View from your Refractor Fits Standard 2 50.8 mm Diameter Focus Tubes Use Both 2 50.8 mm and 1.25 31.75 mm Eyepieces. New 2 90 deg 99 Dielectric Mirror Diagonal for Telescope With 1.25 adapter full metalhas a 110th wave flat optical glass surfacesolid aluminum housingthreaded to accept standard 2 filtersThe 2 eyepiece holder uses a non-marring brass compression ring to secure your valuable eyepieces. The 1.25 adapter also has a non-marring brass compression ring. Both sizes of eyepieces may be used and are protected from dings and scratches that would result from a standard set-screw. This 2 diagonal works with any Refractor that accepts a 2 star diagonals. It can also be used with Schmidt-Cassegrain or Maksutov-Cassegrain with an optional 2 inch visual back See below. Dielectric diagonal is especially importantA standard aluminized diagonal has about 92 reflectanceAnd this decreases with time as the aluminum mirror surface ages. For the vast majority of the visible spectrumthe reflectance does not vary more than about 0.1 below 100And the dielectric surface does not age like aluminumThis combination leads to the equivalent of a little more light grasp compared to standard diagonals.

90 diagonal features sophisticated, lab-tested dielectric coatings that boast an astounding 99 percent reflectivity. Dielectric mirror coatings are more durable and more reflective than enhanced aluminum coatings. Diagonal provides a comfortable 90-degree viewing orientation when observing the night sky through a refractor, Maksutov-Cassegrain Mak-Cass or Schmidt-Cassegrain telescope. Machined and anodized aluminum housing features machine-threaded baffles for optimized contrast. 1.25 nosepiece barrel is threaded to accept like-sized Orion eyepiece filters.

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 Orion filters.

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.

All-surface multilayer coated.. Used for 1.25 inch focus seat and 1.25inch eyepiece.. Interface with 1.25 inch thread can be connected with 1.25in filter.. Constructed with aluminum alloy housing and stainless steel cover plate, available for long lifespan.. Not recommended for use in reflective telescopes..

Interface with 1.25 inch thread can be connected with 1.25in filter.. All-surface multilayer coated prism system.. Constructed with aluminum alloy housing and stainless steel cover plate, available for long lifespan.. Not recommended for use in reflective telescopes.. Used for 1.25 inch focus seat and 1.25inch eyepiece..

All-surface multilayer coated prism system.. Used for 1.25 inch focus seat and 1.25inch eyepiece.. Interface with 1.25 inch thread can be connected with 1.25in filter.. Constructed with aluminum alloy housing and stainless steel cover plate, available for long lifespan.. Not recommended for use in reflective telescopes..

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