The SVBONY SV223 2″ Clicklock Diagonal is a premium 90-degree dielectric mirror diagonal designed for high-contrast visual observing and imaging. Featuring a >99% reflective dielectric coating and precision CNC construction, it delivers bright, sharp views while providing a secure and ergonomic viewing experience.

Key Features

• >99% Dielectric Reflectivity
  Dielectrically coated mirror with approximately 1/10 λ surface accuracy delivers excellent brightness, contrast, and resolution for planetary, lunar, and deep-sky observation.
• Clicklock Compression System
  Clicklock mechanism securely clamps 2″ eyepieces and accessories evenly, preventing tilt or wobble with a simple twist.
• Comfortable 90° Viewing Angle
  Right-angle design redirects the light path for a more ergonomic observing position, especially useful at high elevations.
• Precision CNC-Machined Housing
  Rigid aluminium body with internal anti-reflection baffling reduces stray light and maximises image contrast.
• 2″ to 1.25″ Adapter Included
  Supplied adapter allows seamless use of both 2″ and 1.25″ eyepieces and accessories.

Clicklock Locking Mechanism

The Clicklock system evenly grips accessories around their circumference, providing a firm hold without marring barrels. This ensures stable alignment and eliminates image shift during observing.

High-Precision Dielectric Mirror

The thick mirror substrate and dielectric coating maintain optical accuracy and durability. Internal safety stops prevent accessories from contacting the mirror surface, protecting long-term optical performance.

Brass Compression Ring Protection

Brass compression rings on both the diagonal and adapter provide secure clamping while protecting eyepiece barrels from scratches and deformation.

Image Orientation & Use

As with all mirror diagonals, the SV223 produces an upright image with left-right reversal. This orientation is ideal for astronomical observing but not intended for terrestrial use requiring true orientation.

Typical Use Cases

• High-contrast lunar and planetary observation
• Deep-sky visual observing
• Binoviewer and heavy eyepiece support
• Refractors and catadioptric telescopes

Key Specifications

• Diagonal size: 2″
• Angle: 90°
• Reflectivity: >99% dielectric coating
• Mirror flatness: approx. 1/10 λ
• Clamping: Clicklock with brass compression ring
• Adapter: 2″ to 1.25″ included

Compatibility Notes

• Suitable for refractors and SCTs with 2″ focusers
• Supports heavy 2″ eyepieces securely
• Mirror diagonal (image is laterally reversed)