Baader T-2 bent mirror (Zeiss) Prism with BBHS® coating

Baader T-2 bent mirror (Zeiss) Prism with BBHS® coating

The Baader T-2 Stardiagonal Prism is a top-of-the-range angled gearbox designed according to Zeiss optical standards. Equipped with glass prism BaK4 and the famous BBHS®, It offers exceptional light transmission and maximum contrast, ideal for lunar, planetary and solar observation.

High-precision prism conforming to Zeiss standards

The prism is manufactured to Zeiss specifications to guarantee extremely high optical precision.

• High-quality BaK4 prism
• Manufactured to Zeiss standards
• Multi-treated optical surfaces
• Flatness and precision approx. 5 times higher to standard prisms

This precision results in a particularly sharp image, with high contrast and excellent reproduction of fine details.

High-performance BBHS® treatment

The treatment BBHS® (Broad Band Hard Silver) ensures maximum light transmission and durability.

• Very high light transmission
• Optimum contrast
• Durable, resistant treatment
• Ideal performance for planetary and lunar observation

Compact T-2 modular design

Thanks to T-2 threads on both sides, This angled lens can be easily integrated into a wide range of optical systems, while keeping optical length to a minimum.

• T-2 connection on both sides
• Extremely compact design
• Highly flexible integration into an optical train
• Adaptable to different types of telescopes

Large clear opening

• Clear opening: 35 mm
• Telescope connection : 2″ or 1.25″ (depending on adapter)
• Eyepiece connection : 1.25″

This generous aperture limits vignetting and preserves the full brightness of the optical system.

Robust mechanical construction

The prism is mounted in a precision-machined metal housing, This is far superior to the plastic housings often used on standard prisms.

• All-metal housing
• High mechanical rigidity
• Precise, long-lasting optical support
• Premium manufacturing quality

Key features

An angled reference for high-resolution observation

Thanks to its Zeiss-compliant manufacturing process, its treatment BBHS® and its extremely compact modular design, the Baader T-2 Stardiagonal Prism is the benchmark solution for astronomers looking for maximum optical quality and flexible integration into their optical train.