Top 10 Diagonal Mirror for Telescope – Telescope Refractors

As an Amazon Associate I earn from qualifying purchases.

1. SVBONY

#ad

SVBONY 1.25 inches 90 Degree Zenith Diagonal Mirror for Refractor and Cassegrain Telescopes Astronomical Telescope

#ad
SVBONY #ad - 1. 25" 90 degree diagonal mirror using with refrator telescope and makes the image upright;though left and right reversed;not affect astronomical observation. Made of aluminum alloy and durable. Fully coated lens come with dust cover;keep your lens clean for superior image fidelity. Wide 90 degree angle;you can view correct image from refractor telescope stand and just look down with a comfortable angle . Standard 1. 25'' diameter;fit for 1. 25'' focuser and eyepiece;work with refractor and catadioptric telescopes;not recommended for reflector telescope.
BrandSVBONY #ad
ManufacturerSVBONY #ad
Height2.76 Inches
Length4.33 Inches
Weight0.15 Pounds
Width2.17 Inches
Part NumberFUSW2239A
ModelFUSW2239A
WarrantyLifetime warranty;we confidently promise lifetime warranty for each one form us

2. Delaman

#ad

Delaman Diagonal Adapter, 1.25in 90 Degree Diagonal Adapter Erecting Image Prism Mirror for Refractor Catadioptric Telescope

#ad
Delaman #ad - Just insert into 1. 25in telescope at the silver end, the other end fix 1. 25in eyepiece by the screw. High materials : the body is constructed of high quality materials, sturdy and not easy to damage. Practicals : wide 90 degree angle allows you to view correct image from refractor telescope stand and just look down with a comfortable angle. Easy to install : easy to install and use. Suitable for : standard 1. 25in diameter fits for 1. 25in eyepiece and telescope focuser. Unique design : designed for refractor and catadioptric telescopes, and not for reflector telescope.
BrandDelaman #ad
ManufacturerDelaman #ad
Height1.97 Inches
Length1.97 Inches
Weight0.24 Pounds
Width1.97 Inches
Part NumberDelamanhkqg8xgnaf

3. Celestron

#ad

Celestron 1.25" Star Diagonal, Black 94115-A

#ad
Celestron #ad - Item package dimensions:4. 5"l x2. 25"w x3"h. Fits telescopes with 1. 25” focusers or visual backs, 90° Viewing Angle, Best For Observing Objects Overhead. Country of Origin: China. Product Type: Binocular.
BrandCelestron #ad
ManufacturerCelestron Acquisition LLC #ad
Height3 Inches
Length4.5 Inches
Weight0.35 Pounds
Width2.25 Inches
Part Number94115-A
Model94115-A

4. Celestron

#ad

Celestron 90° Dielectric Star Mirror Diagonal with Twist Lock 1.25"

#ad
Celestron #ad - Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes. Accepts standard eyepieces, threaded filters, Barlow lenses, and other accessories with a 1.

25” barrel. Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings. Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment. 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece.
BrandCelestron #ad
ManufacturerCelestron #ad
Height4.25 Inches
Length3.7 Inches
Width5.2 Inches
Part Number9357X-CELESTRON

5. Bindpo

#ad

Bindpo Diagonal Mirror,1.25" 90 Degree Diagonal Mirror Adapter Erecting Image Prism Optical Zeniths Mirror for 1.25inch Telescope Eyepiece

#ad
Bindpo #ad - Just insert into 1. 25in telescope at the silver end, the other end fix 1. 25in eyepiece by the screw. Portable operation erecting image prism- easy to install and use. 1.

25in telescope mirror- standard 1. 25in diameter fits for 1. 25in eyepiece and telescope focuser. 1. 25" 90 degree diagonal Adapter Erecting Image Prism Mirror for Telescope. Professioanl design for refractor Catadioptric Telescope- Designed for refractor and catadioptric telescopes, and not for reflector telescope. Great after-sales servicewe offer 100% satisfaction service and lifetime technical support, any questions, please feel free to contact us via Amazon message or contact info on the service card. Wide 90 degree angle diagonal adapter- Wide 90 degree angle allows you to view correct image from refractor telescope stand and just look down with a comfortable angle.
BrandBindpo #ad
ManufacturerBindpo #ad
Height1.97 Inches
Length1.97 Inches
Weight0.24 Pounds
Width1.97 Inches
Part NumberBindpoc1qsdg52ez

6. Orion

#ad

Orion 8727 2-Inch Dielectric Mirror Star Diagonal

#ad
Orion #ad - The diagonal is a great way to make nighttime viewing orientations through a refractor telescope more comfortable. Machined and anodized aluminum housing features machine-threaded glare baffles for high contrast. 90 degrees 2" mirror diagonal features sophisticated, lab-tested dielectric coatings that provide an astounding 99% reflectivity. Nosepiece barrel is threaded to accept 2" Orion filters, a 2"-1. 25" step-down adapter is included. Dielectric mirror coatings are more durable than enhanced aluminum coatings and provide higher reflectivity for maximum view brightness.
BrandOrion #ad
ManufacturerOrion #ad
Part Number8727
Model8727

7. Serounder

#ad

Serounder Diagonal Lens,1.25" 90 Degree Optical Glass Astronomical Telescope Diagonal Mirror Erect Image Lens with Dust Cover

#ad
Serounder #ad - The diagonal mirror is suitable for celestial observation and for terrestrial observation. A 1. 25 inch 90-degree angle mirror ensures that the image is upright but upside down. 4 screws fix the base, for easy removal and cleaning. With dust cover, keep lens clean for clear viewing and long time use. Durable, this product is made of high quality optical glass.
BrandSerounder #ad
ManufacturerSerounder #ad
Height0 Inches
Length0 Inches
Weight0.37 Pounds
Width0 Inches
Part NumberSeroundero940bzfawu

8. Celestron

#ad

Celestron 2-Inch XLT Diagonal Mirror for SCT Telescope

#ad
Celestron #ad - 1/10th wave mirror is tested with an interferometer to ensure quality. Includes a 2” to 1. 25” adapter and aluminum carry case. 2” sct mirror diagonal with high performance XLT coatings. Housing is precision machined to achieve and hold good optical alignment.
BrandCelestron #ad
ManufacturerCelestron #ad
Height8 Inches
Length7 Inches
Weight2.16 Pounds
Width8 Inches
Part Number93527
Model93527
Warranty2 Year accessories warranty

9. Serounder

#ad

1.25" 90 Degree Diagonal Adapter Erecting Image Positive Prism Optic Mirror for Telescope Eyepiece Accessories

#ad
Serounder #ad - Wide 90 degree angle allows you to view correct image from refractor telescope stand and just look down with a comfortable angle. Designed for refractor and catadioptric telescopes, and not for reflector telescope. Standard 1. 25in diameter fits for 1. 25in eyepiece and telescope focuser. The body is constructed of high quality materials, sturdy and not easy to damage. Easy to install and use. Just insert into 1. 25in telescope at the silver end, the other end fix 1. 25in eyepiece by the screw.
BrandSerounder #ad
ManufacturerSerounder #ad
Height1.97 Inches
Length1.97 Inches
Weight0.24 Pounds
Width1.97 Inches
Part NumberSeroundercbf498huy5

10. SVBONY

#ad

SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter

#ad
SVBONY #ad - New 2" 90 deg 99% dielectric mirror diagonal for telescope with 1. 25" adapter; full metal;has a 1/10th wave flat optical glass surface;solid aluminum housing;threaded to accept standard 2" filters;The 2" eyepiece holder uses a non-marring brass compression ring to secure your valuable eyepieces.

Dielectric diagonal is especially important;A standard aluminized diagonal has about 92% reflectance;And this decreases with time as the aluminum mirror surface ages. For the vast majority of the visible spectrum;the reflectance does not vary more than about 01% below 100%;and the dielectric surface does not age like aluminum;This combination leads to the equivalent of a little more light grasp compared to standard diagonals.

This 2" diagonal works with any Refractor that accepts a 2" star diagonals. Excellent quality dielectric diagonal; mirror star diagonal - 99% reflectivity;provides a Comfortable 90 Degree View from your Refractor; Fits Standard 2" 508 mm diameter focus Tubes; Use Both 2" 508 mm and 1. 25" 31. 75 mm Eyepieces. It can also be used with schmidt-Cassegrain or Maksutov-Cassegrain with an optional 2 inch visual back See below.
BrandSVBONY #ad
ManufacturerSVBONY #ad
Height2 Inches
Length1 Inches
Width1 Inches
Part NumberFW2733A