2" 99% Dielectric Mirror Diagonal

This premium 2-inch dielectric mirror diagonal is designed for visual astronomers who demand maximum brightness, contrast, and durability. Featuring a 99% reflective dielectric-coated mirror, it delivers excellent light throughput and sharp, high-contrast views across lunar, planetary, and deep-sky targets.

Dielectric coatings are extremely durable and resistant to oxidation, making this diagonal ideal for long-term use without degradation in optical performance. The precision-machined housing ensures accurate alignment and reliable performance in demanding observing conditions.

Compatible with a wide range of refractors and Schmidt-Cassegrain telescopes, this diagonal accepts standard 2-inch eyepieces and accessories, making it a versatile upgrade for serious visual observing.

Key Features

• 99% dielectric mirror coating for maximum reflectivity
• Excellent contrast and brightness
• Durable, oxidation-resistant dielectric surface
• Precision-machined metal housing
• Standard 2-inch eyepiece compatibility

Specifications

• Diagonal Type: Dielectric mirror diagonal
• Reflectivity: 99%
• Eyepiece Size: 2"
• Application: Visual astronomy
• Compatible Telescopes: Refractors, SCTs
• Body: Aluminium, black anodised

What’s Included

• 1 × 2" 99% Dielectric Mirror Diagonal
• Protective storage box