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SV222 Erect Prism Diagonal 90 Degree 1.25-inch Anti Reflection Coating Metal for Refractor Telescope

SKU: W9179B
-20% US$ 71.99
List Price: US$ 89.99

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.

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SV222 Erect Prism Diagonal 90 Degree 1.25-inch Anti Reflection Coating Metal for Refractor Telescope

 

-- Necessary for Astronomical Observaton

sv222 diagonal mirror 10.jpg

Fully Multi-Coated 

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

sv222 fully multi coated 11.jpg

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

sv222 matting design 12.jpg

Matting Velvet On Side Panels

sv222 matting velvet on sige panels 13.jpg

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.

sv222 brass pressure ring 14.jpg

Eyepiece Anti-contact Stopper Design & Cone Anti-drop Insert

sv222 eyepiect anti-contact stopper design 15.jpg

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.

sv222 support standard 1.25 inch filter installation 16.jpg

Strong and durable

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

sv222 diagonal 90 degree 17.jpg

Comparison Before & After Use

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

before and after use of sv222   -18.jpg

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Specifications

Brand SVBONY
Model SV222
Size 1.25inch
Optical Design Prism Diagonal
Inner Connection (Lens Sided) Thread M28.5x0.6
Outer Connection (Lens Sided) Barrel 1.25inch
Inner Connection (Eyepiece Sided) Clamp 1.25inch
Coating Anti-reflection coating
Image Orientation Erect image, non-reversed
Optical Length appr. 65.6mm
Clamping System Screw clamps
Deflection Angle 90°
Clear Aperture 19mm
Body Material CNC Metal Aluminum
Prism Material BK7
Net Weight 153.8g/5.43oz

Features

 

1.High-quality 90-degree erecting prism with anti-reflection coating allows for good contrast and bright images.
2.Entirely aluminum, black anodized eyepiece holder, large, chromed thumbscrews.
3.Internally blackened and baffled to prevent internal stray light reflections.
4.1.25" eyepiece holder comes with anti-marring brass compression ring.
5.Accepts 1.25" eyepieces, fits in 1.25" focusers.
6.For terrestrial or astronomical use, this diagonal produces a right-side-up, non-reversed image with correct daytime orientation
7.Not recommended for use in Newtonian reflector or DOB reflector telescopes
8.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.



Package Includes

 

SV222 1.25" 90 Degree Metal Correct Image Prism Diagonal
1PCS M4 Screws
1PCS Dust Cap
1PCS Dust Plug

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