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User Manuals for Diagonals & PrismsYou have selected the product series Optics - Telescopes - Eyepieces & Accessories - Diagonals & Prisms. Now choose the brand, model or product code you are looking for. If it is not available, you can request it from customer support.Manufacturers – select a brand:
Alpine Astronomical - Celestron - Explore Scientific - iOptron - Levenhuk - Lumicon - Meade - Olivon - Snypex - Tele Vue - Vixen Optics
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Celestron 90-Degree Mirror Diagonal for SCT |
The Celestron 90-Degree Mirror Diagonal (2") is a star diagonal with StarBright XLT coating, for use with Schmidt-Cassegrain telescopes with the 2"-18 threaded device. Star diagonal is the term commonly associated with 90° mirror diagonals such as this, which let you view objects that are at a 90° angle from the direction the tel...
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Meade #933 45-Degree Erect Image Prism |
The Meade #933 45° erect image prism delivers views which both upright and laterally correct, which is particularly useful for terrestrial observing sessions. This model fits exclusively the ETX-60/70/80 telescopes, and has a built-in effective magnification of 2.4x (it is recommended for terrestrial use with longer focal legnth ey...
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Meade #932 45-Degree Erect Image Prism |
All the mentioned ETX series telescopes include an internal optical-flat mirror to reflect light to the telescope's 90° astronomical observing position; in this position the telescope's image is upright but reversed. For terrestrial observing, the Meade #932 prism renders images that are both upright and laterally correct. ...
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Celestron 90° Star Diagonal |
This 1.25" 90° Star Diagonal from Celestron provides a comfortable viewing position when the telescope is at or near the zenith. Its optical design renders images which are upright, but laterally reversed. Accepts 1.25" filters for astronomical & terrestrial applications UPC: 050234941150 In the Box Celestron 90° Star Diagonal (1.25") ...
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Celestron 45-Degree Erect Diagonal |
Celestron's erect image diagonals are Amici prism designs, allowing you to look into the telescope at a 45° angle at images which are upright and laterally correct. This is extremely comfortable for terrestrial viewing or when sharing the viewing experience between those of varying heights, and comes at the expense of a loss in bri...
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Tele Vue 1.25" 60° Everbrite Star |
Designed for optimum comfort when viewing terrestrial subjects or bird-watching, the Tele Vue 1.25" 60° Everbrite Star Diagonal eschews the conventional 90° viewing angle, for a more ergonomic 60° angle. A mirror corrects images vertically but not horizontally, so subjects will appear right-side-up but directions will be reversed. Made...
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Tele Vue 90-Degree Everbrite Mirror Diagonal |
Unlike others, Tele Vue prisms and mirror diagonals begin life as one solid chunk of metal-which is then continually refined to produce what you see before you now. This is a huge asset because there's nothing within the prism or diagonal which can unscrew and cause a heavy, expensive eyepiece to drop. Tele Vue's Everbrite diagonals pro...
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Meade #918A 90-Degree Prism Diagonal |
A 90° diagonal prism for Schmidt-Cassegrain and refractor telescopes, the Meade #918A renders upright but laterally-reversed images which are brighter than erect image designs, which render images both upright and laterally correct at the expense of a bit of light. When at lower magnifications it is fine to use an erecting device, ...
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| 1 ... 3 | 4 | 5 | | Showing: 41-48 products | Total: 48 products |
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