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Celestron
Celestron's Erect Image Diagonal is an Amici prism design. This design allows you to look into the telescope at a 90° angle, at images that are oriented properly, meaning the image is upright and correct from left to right.
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ORION
Don't put a standard-issue diagonal into a high-quality refractor or Cassegrain telescope or you'll be losing 10% or more of the light collected by the scope's optics. Use an Orion Enhanced mirror diagonal instead. Their lab-tested enhanced aluminum coatings reflect 97% of the inbound light to your eyepiece, for brighter images compared to standard diagonals. Beautifully machined and anodized aluminum housing features machine-threaded baffles for high contrast and nonmarring compression ring collar for securing the eyepiece. The 2" model has a 1.25" adapter to allow use of 1.25" eyepieces. Nosepiece barrel is threaded to accept filters. Endcaps included.
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ORION
Designed to provide a convenient 90-degree eyepiece angle for astronomical viewing, this 1.25" prism diagonal features an all-brass housing. Recommended for stargazing and Moon watching.
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Celestron
This high quality 90-degree multicoated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces. A much higher quality than standard diagonals, it fits all rear cells of Schmidt-Cassegrains (comes standard with CGE 1400). Includes an adapter to accept 1 1/4" eyepieces and an adapter to use with refractor telescopes.
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ORION
These precision 90-degree star diagonals feature fully coated prisms, delivering superior image fidelity. Each features a machined aluminum eyepiece holder and a chrome-plated metal barrel that's threaded for filters. The eyepiece holder has a setscrew for locking the eyepiece securely in place. Both models produce an image that is right-side up and reversed left to right (therefore, not recommended for terrestrial observing). Diagonals are not recommended for use in reflector telescopes. #8763 Prism Star Diagonal, 1.25" Fits in 1.25" focusers, accepts 1.25"-diameter eyepieces. #14008 Hybrid Prism Star Diagonal Allows use of 1.25" eyepieces in a 0.965" focuser.
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ORION
Many observers prefer to use a good-quality mirror diagonal instead of a prism diagonal with high-end telescope systems. The mirror in these 90-degree diagonals are meticulously polished to yield maximum performance. Housings are made of black-anodized aluminum. Barrels are internally blackened Each 2" diagonal accepts both 2" and 1.25" eyepieces (with included adapter). The 2" eyepiece holder as two locking setscrews for maximum eyepiece security. These diagonals render images that are right-side up and reversed left to right (therefore, not recommended for terrestrial observing). Diagonals are not recommended for use in reflector telescopes.
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ORION
Many observers prefer to use a good-quality mirror diagonal instead of a prism diagonal with high-end telescope systems. The mirror in these 90-degree diagonals are meticulously polished to yield maximum performance. Housings are made of black-anodized aluminum. Barrels are internally blackened. Each 2" diagonal accepts both 2" and 1.25" eyepieces (with included adapter). The 2" eyepiece holder as two locking setscrews for maximum eyepiece security. These diagonals render images that are right-side up and reversed left to right (therefore, not recommended for terrestrial observing). Diagonals are not recommended for use in reflector telescopes.
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ORION
Our highest-quality mirror diagonals feature sophisticated, lab-tested dielectric coatings that boast an astounding 99% reflectivity. Dielectric coatings are more durable than enhanced aluminum coatings, so you'll enjoy years of exceptional performance. The machined and anodized aluminum housing features machine-threaded baffles for high contrast and a nonmarring compression ring collar for securing the eyepiece. Nosepiece barrel is threaded to accept filters. Endcaps included.
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ORION
Our highest-quality mirror diagonals feature sophisticated, lab-tested dielectric coatings that boast an astounding 99% reflectivity. Dielectric coatings are more durable than enhanced aluminum coatings, so you'll enjoy years of exceptional performance. The machined and anodized aluminum housing features machine-threaded baffles for high contrast and a nonmarring compression ring collar for securing the eyepiece. The 2" model has a 1.25" adapter to accept 1.25" eyepieces. Nosepiece barrel is threaded to accept filters. Endcaps included.
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