DON'T MISS THE JULY 4th PENUMBRAL LUNAR ECLIPSE! Learn More ...
More About Telescope Diagonals
A telescope diagonal uses mirrors or prisms to redirect the beam of light upward — usually by 45 or 90 degrees — for more convenient viewing with refractor or Cassegrain telescopes. Orion Telescopes carries top-quality prism and mirror diagonals in both 1.25" and 2" sizes, including some with enhanced, ultra-high reflectivity optical coatings. While many diagonals produce a backwards view, our correct-image diagonals provide a correctly oriented image, which is practical for terrestrial viewing.
Any discounts and/or promotional offers apply only to products listed on their respective pages. Prices valid only while supplies last and are limited to stock on hand.
Products on sale or subject to promotional offers are limited to two units per customer. Large volume orders are subject to special order policies — contact our Customer Service Department for additional details.
Pricing and/or promotions are subject to change without notice.