Top Telescope Diagonals and Accessories

The best Telescope Diagonals includes SVBONY SV221 90° Telescope Diagonal, SVBONY 1.25" 90° Dielectric Mirror Diagonal, SVBONY (SV188P) 90° Dielectric Mirror Diagonal and many others as mentioned below.

1

SVBONY SV221 90° Telescope Diagonal

  • Enhanced aluminum design for better light transmittance.
  • 1.25 inches diameter for versatile telescope compatibility.
  • Brass compression ring prevents damage to eyepieces.
  • Supports 1.25-inch filters for varied observations.
  • 90-degree angle for comfortable viewing experience.
  • Internal extinction treatment for clearer, brighter images.
  • Ideal accessory for refractor telescopes and stargazing.
  • Average Rating out of 5:
  • Price Range: $19.99
  • Material: Plastic & metal
2

SVBONY 1.25" 90° Dielectric Mirror Diagonal

  • 90% reflectivity for reduced light loss.
  • Standard 1.25 inches diameter for compatibility.
  • 90-degree viewing angle for comfort.
  • Suitable for refractors and catadioptric telescopes.
  • Full metal construction for durability.
  • Includes dust cover for lens protection.
  • Enhances clarity for astronomical observations.
  • Average Rating out of 5:
  • Price Range: $31.99
3

SVBONY (SV188P) 90° Dielectric Mirror Diagonal

  • High-reflective dielectric coating for maximum brightness.
  • 99% reflectivity enhances clarity and image quality.
  • Compatible with 2-inch telescopes and eyepieces.
  • Includes 2-inch to 1.25-inch converter.
  • Comfortable 90-degree viewing angle for star observation.
  • Brass compression rings prevent eyepiece damage.
  • Specially treated to eliminate stray light reflections.
  • Average Rating out of 5:
  • Price Range: $74.99
  • Material: Metal
4

Astromania 1.25" 90-Degree Erecting Prism

  • Transforms telescope for upright nature observation.
  • 90-degree design for comfortable viewing angle.
  • Compatible with standard 1.25-inch eyepieces.
  • Made of high-quality BK7 optical glass.
  • Delivers clear and sharp images without mirrors.
  • Durable ABS plastic housing with metal barrels.
  • Secures eyepiece with clamping aluminum screw.
  • Average Rating out of 5:
  • Price Range: $27.97
  • Material: Aluminum,Abs,Glass,Plastic
5

Alstar 1.25" 45-Degree Optical Prism

  • 1.25-inch size fits standard telescope connectors.
  • 45-degree angle for comfortable viewing orientation.
  • Diagonal prism ensures clear, sharp images.
  • Not suitable for Newtonian telescopes.
  • Filter thread for 1.25-inch filters included.
  • Durable metal barrel for secure installation.
  • Ideal for both daytime and nighttime use.
  • Average Rating out of 5:
  • Price Range: $23.99
6

Celestron Dielectric Star Diagonal (93573)

  • Premium diagonal for enhanced telescope views.
  • Diffraction-limited optics for superior clarity.
  • Dielectric coatings ensure over 99% reflectivity.
  • 90° viewing angle for comfortable observations.
  • Twist-lock mechanism secures eyepiece alignment.
  • Accepts 2” and 1.25” eyepieces and accessories.
  • Includes step-down adapter for versatility.
  • Average Rating out of 5:
  • Price Range: $249.95
7

Celestron 2-Inch XLT SCT Diagonal Mirror

  • High-performance 2” SCT mirror diagonal.
  • XLT coatings for enhanced light transmission.
  • 1/10th wave mirror ensures exceptional optical quality.
  • Precision machined housing maintains optical alignment.
  • Includes 2” to 1.25” adapter for versatility.
  • Comes with aluminum carry case for protection.
  • Compatible with various SCT telescopes.
  • Average Rating out of 5:
  • Price Range: $161.35
8

Astromania 1.25" 90-Degree Diagonal Mirror

  • 1.25 inch diagonal mirror for telescopes.
  • 90-degree angle for comfortable viewing from above.
  • Compatible with standard 1.25 inch eyepieces.
  • Filter thread for easy filter attachment.
  • Protective coating ensures long-lasting performance.
  • Metal barrel provides secure fitting in focuser.
  • Ideal for refractor and Cassegrain telescopes.
  • Average Rating out of 5:
  • Price Range: $20.97
9

NEEWER 1.25" 45° Prism Diagonal for Telescopes

  • Compatible with all 1.25" eyepieces.
  • Provides accurate image orientation for viewing.
  • Comfortable 45° angle for easy observation.
  • Delivers bright, sharp images with color fidelity.
  • Durable metal construction for outdoor use.
  • Easy installation with secure screw knob.
  • Protective copper ring prevents eyepiece scratches.
  • Average Rating out of 5:
  • Price Range: $23.59
10

Bindpo 1.25" Diagonal Mirror Adapter

  • Standard 1.25" size fits most telescopes.
  • 90-degree angle for comfortable viewing position.
  • Erecting image prism for clear visuals.
  • Designed for refractor and catadioptric telescopes.
  • Easy to install with secure screw mechanism.
  • Portable design for convenient use and transport.
  • Responsive after-sales support for customer inquiries.
  • Average Rating out of 5:
  • Price Range: $23.69
11

ULTECHNOVO 90° Diagonal Mirror Telescope Accessory

  • 90° angle for comfortable viewing orientation.
  • Compatible with 0.965 inch telescope eyepieces.
  • Easy installation with simple screw mechanism.
  • Precision optics for enhanced image quality.
  • Durable construction for long-lasting reliability.
  • Lightweight design for easy portability.
  • Helps reduce neck strain during observations.
  • Average Rating out of 5:
  • Price Range: $9.96
  • Size: 3.3"L x 1"W
  • Color: Black
  • Material: Plastic
12

SG Store 90° Diagonal Mirror (1Pc)

  • Compatible with refracting and astronomical telescopes.
  • Converts 0.965" to 1.25" eyepiece sizes.
  • 90-degree diagonal for optimal viewing angles.
  • Dust cover protects against dirt and debris.
  • Easy installation with adjustable screws.
  • Enhances flexibility for astronomy enthusiasts.
  • Durable construction for long-lasting use.
  • Price Range: $11.59
13

A ALSTAR 1.25" 90° Diagonal Mirror

  • 90-degree angle for comfortable viewing.
  • Protective coating for long-lasting mirror performance.
  • Metal barrel ensures secure fitting in focuser.
  • Compatible with standard 1.25-inch eyepieces.
  • Filter thread fits any 1.25-inch filter.
  • Ideal for refractor and Cassegrain telescopes.
  • Not suitable for Newtonian reflector telescopes.
  • Average Rating out of 5:
  • Price Range: $18.99
14

SVBONY SV222 90° Telescope Diagonal

  • 90-degree design for comfortable viewing angles.
  • 1.25-inch thread compatible with various accessories.
  • Anti-reflection coating enhances light transmission.
  • Stable locking mechanism prevents eyepiece slippage.
  • High reflectivity for improved image quality.
  • Reduces stray light for clearer observations.
  • Ideal for refractor telescope users.
  • Average Rating out of 5:
  • Price Range: 0
  • Material: CNC Metal Aluminum
15

SVBONY SV222 45° Diagonal Mirror

  • 1.25-inch aperture for versatile compatibility.
  • Clear, bright images with 45-degree prism design.
  • Full multi-layer and phase coating enhance contrast.
  • Delustering design prevents internal stray light reflections.
  • Durable aluminum alloy construction with black anodizing.
  • Stable installation with brass pressure ring connection.
  • Compatible with 1.25-inch eyepieces and accessories.
  • Average Rating out of 5:
  • Price Range: $54.99
  • Material: CNC Metal Aluminum
16

SKYOPTIKST 1.25" Dielectric Zenith Diagonal

  • 99% reflectivity for brighter, sharper images.
  • Fits standard 1.25-inch telescopes and accessories.
  • Comfortable 90-degree viewing orientation for astronomy.
  • Brass compression ring prevents eyepiece rotation.
  • Durable anodized aluminum housing for lasting quality.
  • Optimized contrast with machine-threaded baffles.
  • Compatible with standard filters and Barlow lenses.
  • Average Rating out of 5:
  • Price Range: 0
  • Material: optical glass
17

Astromania 1.25" 45-Degree Optical Prism

  • High-quality optical prism for clear images.
  • Comfortable viewing from a 45-degree angle.
  • Filter thread for 1.25-inch filters included.
  • Compatible with standard 1.25-inch eyepieces.
  • Durable metal barrel for secure fitting.
  • Ideal for both daytime and nighttime use.
  • Not suitable for reflector telescopes.
  • Average Rating out of 5:
  • Price Range: $24.97
18

Lyzeous 1.25" 45-Degree Telescope Adapter

  • Standard 1.25-inch diameter fits most eyepieces.
  • Designed for refractor and catadioptric telescopes.
  • Wide 45-degree angle for comfortable viewing.
  • Allows daytime viewing in upright position.
  • Easy installation with screw fix for eyepiece.
  • Durable construction for long-lasting use.
  • Compact design for easy portability and storage.
  • Price Range: $7.95
19

Hilitand 1.25" 90° Diagonal Prism Adapter

  • Compatible with 1.25 inch eyepieces and 0.965 inch focusers.
  • 90 degree angle maintains upright image for observations.
  • Fully coated lenses enhance clarity and reduce glare.
  • Easy installation for quick setup and use.
  • Ideal for both celestial and terrestrial viewing.
  • Designed specifically for refracting telescopes only.
  • Includes a dust cover for lens protection.
  • Average Rating out of 5:
  • Price Range: $17.02
20

DOITOOL 90° Mirror Diagonal Adapter

  • 90° diagonal for comfortable viewing angles.
  • Durable construction ensures long-lasting use.
  • Coated lens for superior image clarity.
  • Upright images for enhanced astronomical observation.
  • Compatible with refractor and catadioptric telescopes.
  • Easy installation for quick setup.
  • Protective cover keeps lenses clean and safe.
  • Price Range: $13.29
  • Color: Blackx2pcs
21

SVBONY SV223 90° Diagonal Mirror

  • 99% reflective dielectric coating for clear images.
  • Clicklock mechanism securely holds eyepieces in place.
  • High-quality aluminum construction for durability.
  • 90-degree angle for improved observation comfort.
  • Internal baffling enhances image contrast quality.
  • Lightweight design for easy portability and use.
  • Compatible with 2-inch telescopes and 1.25-inch adapters.
  • Average Rating out of 5:
  • Price Range: $149.99
  • Material: Metal
22

SVBONY 90° Diagonal Mirror for Telescopes

  • Standard 1.25" diameter for compatibility.
  • Ideal for refractor and catadioptric telescopes.
  • Not suitable for reflector telescopes.
  • Fully coated lens for superior image quality.
  • Wide 90-degree angle for comfortable viewing.
  • Makes images upright, with left-right reversal.
  • Durable aluminum alloy construction for longevity.
  • Average Rating out of 5:
  • Price Range: 0
  • Material: Plastic & metal
23

Astromania 2" 90-Degree Star Diagonal

  • 2-inch diagonal for wider field of view.
  • 93% reflectivity for clear, bright images.
  • Durable dielectric coatings enhance performance.
  • Compatible with Schmidt-Cassegrain telescopes.
  • 90-degree design for better observation angles.
  • Constructed from long-lasting aluminum alloy.
  • Secure brass clamping ring prevents marring.
  • Average Rating out of 5:
  • Price Range: $65.99
24

Serounder 1.25" 90° Diagonal Prism Adapter

  • Standard 1.25-inch diameter for eyepiece compatibility.
  • Perfect for refractor and catadioptric telescopes.
  • Wide 90-degree angle for comfortable viewing.
  • Produces correct image orientation for easy observation.
  • Simple installation into 1.25-inch telescope focuser.
  • Durable construction ensures long-lasting use.
  • Secure eyepiece attachment with adjustable screw.
  • Average Rating out of 5:
  • Price Range: $22.54
  • Color: Black + Silver
  • Material: Metal + Plastic
25

SVBONY 2" Dielectric Mirror Diagonal

  • High-quality 99% reflectivity dielectric mirror diagonal.
  • Comfortable 90-degree viewing angle for refractors.
  • Fits standard 2" diameter focus tubes easily.
  • Includes 1.25" adapter for versatile eyepiece use.
  • Non-marring brass compression rings secure eyepieces.
  • Durable aluminum housing with threaded filter compatibility.
  • Long-lasting performance without reflectivity degradation.
  • Average Rating out of 5:
  • Price Range: 0
  • Material: Metal
26

GHZHANG 36mm Bubble Vial (2 Pack)

  • Includes two 36mm bubble vials for convenience.
  • Comes with a holder for easy installation.
  • Fits GPS prism and survey poles perfectly.
  • Compatible with Trimble, South, and Sokk-ia.
  • Ensures accurate leveling for surveying tasks.
  • Durable construction for long-lasting performance.
  • Lightweight design for easy portability and use.
  • Price Range: 0
  • Color: One Color
27

Serounder 1.25 Inch Telescope Diagonal

  • 1.25 inch 90-degree diagonal for telescopes.
  • Dielectric mirror for enhanced light transmission.
  • All-surface multilayer coating for superior performance.
  • Compatible with standard 1.25-inch eyepieces.
  • Durable aluminum alloy housing for longevity.
  • Stainless steel cover plate for added protection.
  • Not suitable for reflective telescopes.
  • Average Rating out of 5:
  • Price Range: $24.78
  • Color: default
  • Material: Stainless Steel, Aluminum
28

Ciciglow 1.25" 45° Diagonal Prism Adapter

  • 45 degree angle for comfortable viewing.
  • Maximized light transmission for bright images.
  • Correct and upright images for easy observation.
  • Includes dust proof cover for lens protection.
  • High-quality optical glass for clear visuals.
  • Compatible with standard 1.25 inch telescopes.
  • Ideal for both astronomical and terrestrial viewing.
  • Price Range: $19.77
29

Astromania 1.25" 45-Degree Diagonal Prism

  • High-quality optical prism for clear images.
  • Comfortable 45-degree viewing angle.
  • Compatible with standard 1.25-inch eyepieces.
  • Filter thread for additional 1.25-inch filters.
  • Metal barrel ensures secure fit in focuser.
  • Ideal for daytime and nighttime observations.
  • Not recommended for reflector telescopes.
  • Average Rating out of 5:
  • Price Range: $24.97