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Orion 1.25" Enhanced Mirror Star Telescope Diagonal
4.9 / 5.0
The mirror in this 1.25" Orion Enhanced Star Diagonal has been meticulously polished and features enhanced aluminum coatings to yield excellent 97% reflectivity. It fits 1.25" focusers and accepts 1.25" eyepieces. Ideal for refractor telescopes.
Was 
$79.99
Now 
$71.99
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$8.00
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Orion 1.25" Deluxe 45-degree Correct-Image Prism Diagonal
4.8 / 5.0
Turn any refractor or Maksutov-Cassegrain telescope into a high-performance spotting scope! The Deluxe 45-degree Correct-Image Prism Diagonal transmits a right-side-up, correct left-to-right view. Not recommended for use with Newtonian reflectors.
Was 
$89.99
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$80.99
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$9.00
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Orion 1.25" Pentaprism Diagonal
The Orion Pentaprism 90-Degree Diagonal is the perfect complement to the Orion Premium Linear BinoViewer. It's the only diagonal we know of that will produce an upright, non-mirror-reversed view through a telescope equipped with the BinoViewer.
Was 
$199.99
Now 
$179.99
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$20.00

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Orion Dielectric Mirror Telescope Diagonals
Orion dielectric mirror diagonals are our highest quality diagonals, and a very good upgrade for that extra bit of performance in a refractor or schmidt cassegrain telescope. Features 99 percent reflectivity and extremely durable coatings.
Was
$99.99 - $149.99
Now
$89.99 - $149.99

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Orion Dielectric Twist-Tight Mirror Telescope Diagonals
With their twist-tight clamping mechanisms, Orion Dielectric Twist-Tight Mirror Star Diagonals present a significant upgrade from typical thumbscrew-equipped diagonals. Boasting 99% reflectivity, these are the perfect diagonals for peak performance.
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$119.99 - $179.99
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$107.99 - $161.99
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Since 1975

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About Orion Telescopes & Binoculars

Since 1975 Orion Telescopes & Binoculars has been offering telescopes for sale direct to customers. Now an employee-owned company, we pride ourselves on an unswerving commitment to best quality products, value and unmatched customer care. Our 100% satisfaction guarantee says it all.

Orion offers telescopes for every level: Beginner, Intermediate, Advanced, and Expert. From our entry level beginner telescopes for amateur astronomers to our Dobsonian telescopes to our most advanced Cassegrain telescopes and accessories, you can find the best telescope for you. Because we sell direct, we can offer you tremendous value at a great price. Not sure how to choose a telescope? Orion's Telescope Buyer's Guide is a great place to start.

Orion binoculars are known for quality optics at a great price. We offer binoculars for every viewing interest, including astronomical binoculars, compact binoculars, waterproof binoculars, birding binoculars, and sport and hunting binoculars.

Orion's telescope and astrophotography accessories will enhance your telescope enjoyment without breaking the bank. Expand your viewing experience with accessories ranging from moon filters to power-boosting Barlow lenses to advanced computerized telescope mounts. Capture breathtaking photos with our affordable astrophotography cameras. And when you're stargazing, Orion's telescope cases and covers, observing gear, red LED flashlights, astronomy books and star charts will make your observing sessions more convenient, comfortable and meaningful.

At Orion, we are committed to sharing our knowledge and passion for astronomy and astrophotography with the amateur astronomy community. Visit the Orion Community Center for in-depth information on telescopes, binoculars, and astrophotography. You can find astrophotography "how to" tips and share your best astronomy pictures here. Submit astronomy articles, events, & reviews, and even become a featured Orion customer!