There are few telescope accessories that work as hard or matter as much as a tekescioe diagonal! An integral part of the optical chain, a good diagonal can make a big difference in the quality of the image you see. This Celestron 2-inch Mirror Diagonal allows you to use wide-field 2-inch eyepieces, which are ideal for viewing large deep-sky objects like nebulae and star clusters.

Optical Quality and Construction

The Celestron 2 inch diagonal is built to high standards for optical performance. The housing is precision-machined to ensure the internal optics remain perfectly aligned for sharp images. The internal diagonal mirror is tested with an interferometer to guarantee a surface accuracy of 1/10 wave or better, minimizing optical distortions. Furthermore, the mirror surface is treated with Celestron's high-performance XLT coatings—the same used on their best telescopes—to maximize light transmission and contrast.

Compatibility and Use

• This star diagonal for telescope use threads directly and securely onto the rear cell of standard Schmidt-Cassegrain telescopes.

• To achieve the widest possible fields of view, insert a 2-inch eyepiece.

• For versatility, this 2 inch star diagonal also includes a 2-inch to 1.25-inch adapter, allowing you to use your standard 1.25-inch eyepieces as well.

• When not in use, the Celestron star diagonal can be stored safely in the included aluminum case, making it one of the most complete telescope diagonals available.

This product is covered by Celestron's 2-Year Warranty.

Why Shop Celestron from OpticsCentral?

OpticsCentral is a Premier Select Dealer for Celestron in Australia, offering expert advice, local warranty support, and access to genuine spare parts. As an authorised Celestron Premier Select Dealer, we provide local warranty support and fast turnaround on repairs—giving you peace of mind with every purchase.

About Celestron

Imagine a humble beginning – a 6-inch reflector telescope crafted by Tom Johnson for his young son. This was the spark that ignited a transformative journey. As time passed, his designs evolved into larger, more sophisticated scopes. Today, Celestron shines as an industry trailblazer, renowned for crafting precision optical equipment. From computerised marvels to traditional telescopes, binoculars, spotting scopes and more, Celestron's portfolio is a universe of possibilities. With a legacy spanning over 50 illustrious years, Celestron has earned admiration from both avid hobbyists and dedicated astronomers worldwide. But they don't rest on their laurels; innovation propels them forward. They constantly broaden their product horizons while illuminating minds through global science education initiatives. Celestron's story is one of innovation, evolution and a passion for the cosmos. Join them on this extraordinary journey of discovery and inspiration.

Product Code: 93527