Non Erecting 2 Inch Diagonals

The Baader Planetarium 2" Star Diagonal is a quality piece of astronomical equipment, from the finely machined aluminum housing to the Zeiss prism.

Baader's BBHS dielectric coatings deliver high reflectivity across a wider visual spectrum, resulting in improved color contrasts when compared to aluminum and all-dielectric mirrors.

Takahashi 2" 1/10th Wave Collimated Mirror Diagonal with 1.25" Adapter

Dielectric, nonmetallic mirror coating for 99% reflectivity across the full spectrum.

Baader's dielectric coatings deliver an amazingly high 99% photo-visual reflectivity along with an extremely hard durable surface.

With their ground-breaking introduction several years ago of the all-dielectric 2" Maxbright star diagonal, Baader Planetarium brought mirror star diagonals into the 21st century.

Exquisitely crafted to fold light exactly 90 degrees. The mirror blank is polished to 1/10th the wavelength of light and vacuum coated with enhanced aluminum. Then it's overcoated to protect the delicate mirrored surface.

Ensure maximum light transmission without loss of optical quality with the Celestron Dielectric Star Diagonal, 2” with Twist-Lock.

Dura-Bright 12mm thick mirror and dielectric mirror coatings

The Celestron 2” Mirror Diagonal was built for superior performance.

2" Dielectric Diagonal, carbon fiber body, with collet twist tight clamping mechanism on 2" and compr. Ring on 1 1/4" adapter

A Stellarvue D1029ED Upgrade 2" Enhanced Dielectric Diagonal delivers bright, high-contrast, and true-color views with premium dielectric coatings, making it a superb upgrade for your telescope’s visual performance.

Place your head in a comfortable viewing position when your refractor or catadioptric telescopes

Arcturus' 2" SCT diagonal features dielectric coatings with 99% reflectivity across the visible spectrum and a 1/12 wave BK7 mirror.

2" telescope diagonals and star diagonals allow you to use your 2" eyepieces with your telescope to maximize your stargazing adventures.

Features sophisticated, lab-tested dielectric coatings that boast an astounding 99% reflectivity