Baader T2 Star Diagonal Prism

BBHS stands for Broadband Hard Silver coating. It is designed to maximize light transmission across the entire visible spectrum, which results in significantly brighter, higher-contrast images compared to standard dielectric or aluminum coatings.

No, this is the diagonal body only. Because the T-2 system is modular, you will need to purchase the specific input nosepiece and output eyepiece holder separately to match your telescope's focuser and your preferred eyepiece barrel size.

Prism diagonals like this one are generally preferred for high-contrast planetary and lunar observation because they have fewer surfaces to scatter light. However, they are best suited for telescopes with focal ratios of f/5 or slower to avoid introducing chromatic aberration.

The housing is machined from high-grade aluminum, which provides a rigid, stable platform for your optics. This construction ensures that your eyepiece remains perfectly aligned with the optical axis, even when using heavier accessories.

The T-2 system is primarily designed for 1.25-inch accessories. While you can adapt it, the clear aperture of the T-2 system is 34mm, which will cause vignetting if you attempt to use wide-field 2-inch eyepieces.