Astronomy Plus 2'' 99% Reflexivity Mirror Diagonal

A 2" 90-degree diagonal mirror is an essential upgrade for astronomers using refractor and SCT telescopes that accept 2" accessories, offering a more comfortable viewing angle when observing objects high in the sky. It reflects light at a right angle, reducing neck strain and improving the overall observing experience. 

With 99% reflectivity, it ensures minimal light loss, preserving image brightness and contrast. Compared to a 1.25" diagonal, a 2" model allows the use of larger eyepieces with wider fields of view, enhancing deep-sky observation by capturing more light and revealing fainter details. This increased light-gathering capability results in brighter, more immersive images, making it an excellent choice for those seeking to maximize their telescope’s performance.

The barrel is threaded with an M48 x 0.75 thread, allowing compatibility with standard 2" filters for enhanced viewing and imaging versatility. It also features brass compression rings, which securely hold eyepieces in place while preventing scratches or damage to their barrels.

Technical Specifications

In the Box

• Diagonal
• 2'' to 1.25'' Adapter
• Thumbscrew x2
• Dust caps x2

Warranty & Manual