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Telescope Diagonals

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Orion 1.25" 45 Correct Image Prism Telescope Diagonal
For upright, non-reversed images you need a correct-image diagonal. The Orion 45anddeg; Correct-Image Prism Diagonal is perfect for terrestrial viewing with a refractor or Cassegrain telescope. Fully multi-coated prisms give you superior image fideli
£ 42.99

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1.25" Orion Dielectric Mirror Star Diagonal
The 1.25" dielectric mirror star diagonal angles the eyepiece to a comfortable viewing position, while dielectric coatings give you brighter images compared to a standard star diagonal. The harder surface from the coatings also makes cleaning easier.
£ 78.99

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Orion 1.25" Prism Star Telescope Diagonal
The 1.25" Orion Prism Star Diagonal produces right-side-up images that are reversed left to right. The fully coated prisms provide superior image fidelity. It is not recommended for use with reflector telescopes or for terrestrial observing.
£ 32.99

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Orion 1.25" Twist-Tight Dielectric Mirror Star Diagonal
This high-end diagonal features 99% reflectivity and a twist-tight clamping mechanism to securely grasp inserted 1.25" accessories with a simple clockwise twist of its red aluminum collar.
£ 105.99
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Orion 2" Twist-Tight Dielectric Mirror Star Diagonal
With its twist-tight clamping mechanism, the Orion 2" Dielectric Twist-Tight Mirror Star Diagonal presents a significant upgrade from typical thumbscrew-equipped diagonals. Boasting 99% reflectivity, this is the perfect diagonal for peak performance.
£ 167.99

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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.
£ 159.99

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Orion 1.25" Deluxe 45-degree Correct-Image Prism Diagonal
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.
£ 69.99

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2" Orion Dielectric Mirror Star Diagonal
The 2" Orion Dielectric Mirror Star Diagonal boasts 99% reflectivity giving you very bright images. It is very durable and includes a 2"-1.25" adapter so you can use all your 1.25" and 2" eyepieces.
£ 124.99

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Orion 1.25" Correct-Image Star Telescope Diagonal
The 1.25" Orion Correct-Image Star Diagonal is perfect for terrestrial use or for amateur astronomers who want a view that matches the orientation of a star chart.
£ 35.99

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2" Orion Refractor Telescope Mirror Diagonal
The 2" Orion Refractor Mirror Diagonal has a meticulously polished mirror to yield maximum performance. It fits 2" focusers, accepts 2" telescope eyepieces and includes a 1.25" eyepiece adapter. Not recommended for use in reflector telescopes.
£ 69.99

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Orion 1.25" Enhanced Mirror Star Telescope Diagonal
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.
£ 62.99

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