SVBONY 90 Degree Prism Diagonal 1.25" (W9179B)

• High-quality 90-degree erecting prism with anti-reflection coating allows for good contrast and bright images.
• Entirely aluminum, black anodized eyepiece holder, large, chromed thumbscrews.
• Internally blackened and baffled to prevent internal stray light reflections.
• 1.25" eyepiece holder comes with anti-marring brass compression ring.
• Accepts 1.25" eyepieces, fits in 1.25" focusers.
• For terrestrial or astronomical use, this diagonal produces a right-side-up, non-reversed image with correct daytime orientation
• Not recommended for use in Newtonian reflector or DOB reflector telescopes
• Tips：But all Prism Diagonal-no matter how good they are – suffer from one design feature: There is a line going through the center of the image, where both sides of the prism surfaces come together. This may cause reflections or spikes. To some extent, this will always happen when a bright object like a star is viewed in front of a dark background like the night sky. This should be obvious only with very bright stars or planets.

SVBONY SV222 high-quality 90-degree erecting prism with anti-reflection coating allows for good contrast and bright images. Designed with entirely aluminum, black anodized eyepiece holder, large, chromed thumbscrews, SV222 is internally blackened and baffled to prevent internal stray light reflections. For terrestrial or astronomical use, this diagonal produces a right-side-up, non-reversed image with correct daytime orientation.

Fully Multi-Coated 

Effectively reduce reflection and scattering on the surface of the lens, improve image clarity and detail expression.

Matting & Thread Design

Absorb excess light, prevent light reflection interference, and provide clearer and more accurate observation images.

Thread design ensures the stability and reliability of the observation device, reducing shaking and shaking during observation

Brass Pressure Ring

SV222 diagonal 90 degree protects the eyepiece from being worn by the screw; the eyepiece can be changed quickly without affecting the stability of the entire optical system.

Support Standard 1.25 Inch Filter Installation

SV222 erect prism diagonal 90 degree is designed with 1.25 inches thread, which can connect filter and meet various needs of customers.

Strong and durable

SV222 erect prism diagonal 90 degree with all metal construction, durable steady for a long-term use.

Comparison Before & After Use

For terrestrial or astronomical use, the mirror produces a face-up, non-inverted image with correct daytime orientation.

Technical Specifications 

 In the Box

• SV222 1.25" 90 Degree Metal Correct Image Prism Diagonal
• M4 Screws
• Dust Cap
• Dust Plug

Manuals & Warranty

Svbony 1-Year Warranty