2 to 1.25 Clicklock Dielectric Diagonal Mirror

Upgrade your telescope setup with this 2 to 1.25 Inch Clicklock Dielectric Diagonal Mirror, designed to deliver brighter, sharper views while improving viewing comfort. By redirecting the light path at a 90° angle, it allows for a more natural observing position—perfect for long nights exploring the Moon, planets and deep-sky objects.

With dual-size compatibility and precision optics, it’s a versatile addition to almost any serious astronomy kit.

Key Features

• 99% Reflective Dielectric Coating for maximum brightness and contrast

• 1/10 Lambda Precision Mirror delivers crisp, detailed astronomical views

• 90° Deflection Angle provides comfortable, ergonomic viewing

• Dual 2" and 1.25" Compatibility supports a wide range of eyepieces and accessories

• Secure Clicklock Clamping System ensures fast, stable installation

• Brass Compression Ring protects eyepieces from scratches while holding firmly

• Large Clear Aperture (43mm / 25mm) for improved light transmission

• Heavy Duty Metal Construction for long-term durability and balance

Specifications

• Size: 2 Inch with 1.25 Inch Adapter

• Optical Design: Mirror Diagonal

• Reflectivity: >99%

• Mirror Accuracy: 1/10 Lambda

• Deflection Angle: 90°

• Clear Aperture: 43mm (2"), 25mm (1.25")

• Optical Length: Approx. 109.1mm (2"), 85.5mm (1.25")

• Mirror Thickness: 11.5mm

• Inner Connection (Eyepiece Side): 2" Clamp & 1.25" Clamp

• Inner Connection (Lens Side): M48x0.75 & M28.5x0.6 Threads

• Outer Connection (Lens Side): 2" Barrel & 1.25" Barrel

• Material: Metal

• Net Weight: Approx. 573.7g (2"), 249g (1.25")

Package Contents

• 1 x 2 Inch Clicklock Dielectric Diagonal Mirror

• 1 x 1.25 Inch Adapter

What Makes This a Smart Buy:

This diagonal mirror instantly enhances brightness and viewing comfort without replacing your telescope. With dual-size flexibility and precision optics, it’s a practical upgrade that delivers professional-level performance at excellent value.