2" diagonals

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Accessories / Visual and Everything Else / 2" diagonals
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2" diagonals
A star diagonal is a mirror or prism system that lets you view objects that are at an angle (usually 90°) from the direction a refractor or catadioptric (Schmidt-Cassegrain or Maksutov-Cassegrain) telescope is pointing. This allows you to view comfortably when the telescope is pointed at, or near, the zenith (i.e. directly overhead) by looking straight into the scope in order to see overhead. You don’t have to twist your neck into an uncomfortable position to see objects over your head with a star diagonal. The image in a star diagonal is right side up, but will be reversed from left to right. A star diagonal cannot be used with a reflector telescope, nor is it needed with such a scope.
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2' 99% reflectivity dielectric mirror diagonal for refractors, with compression ring eyepiece holder and 1.25' adapter
 
Astronomy Technologies - 2" 99% reflectivity dielectric mirror diagonal for refractors, with compression ring eyepiece holder and 1.25" adapter 
Our Product #:  AT2D

In Stock: Usually ships within one business day.
This 2” dielectric mirror-type star diagonal would be an outstanding value at twice the price. At this low price, if there ever was a bargain in astronomy, this is it . . .

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$119.95



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2' 99% reflectivity dielectric mirror diagonal for SCTs, with compression ring eyepiece holder and 1.25' adapter
 
Astronomy Technologies - 2" 99% reflectivity dielectric mirror diagonal for SCTs, with compression ring eyepiece holder and 1.25" adapter 
Our Product #:  AT2SD

In Stock: Usually ships within one business day.
This 2” dielectric mirror-type star diagonal is designed to give you first-class performance with a Schmidt-Cassegrain – at a money-saving and far from first-class price . . .

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$149.95



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2' 99% reflectivity guaranteed 1/10th wave dielectric quartz mirror diagonal for refractors, with compression ring eyepiece holder and 1.25' adapter
 
Astronomy Technologies - 2" 99% reflectivity guaranteed 1/10th wave dielectric quartz mirror diagonal for refractors, with compression ring eyepiece holder and 1.25" adapter 
Our Product #:  AT2DQ

In Stock: Usually ships within one business day.
The state-of-the-art 46-layer dielectric coatings on this Astro-Tech 2” star diagonal give its guaranteed 1/10th wave accuracy quartz mirror a full 99% reflectivity for the brightest possible images . . .

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$189.95



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2' 99% reflectivity guaranteed 1/10th wave dielectric quartz mirror diagonal for SCTs, with compression ring eyepiece holder and 1.25' adapter
 
Astronomy Technologies - 2" 99% reflectivity guaranteed 1/10th wave dielectric quartz mirror diagonal for SCTs, with compression ring eyepiece holder and 1.25" adapter 
Our Product #:  AT2SDQ

In Stock: Usually ships within one business day.
This 2” Astro-Tech star diagonal for catadioptric telescopes has a quartz mirror with guaranteed 1/10th wave accuracy and state-of-the-art 46-layer dielectric mirror coatings for a full 99% reflectivity and the brightest possible images . . .

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$199.95



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2' mirror diagonal for refractors and SCTs, w/ 1.25' adapter
 
Celestron - 2" mirror diagonal for refractors and SCTs, w/ 1.25" adapter 
Our Product #:  7717
Celestron #: 93519

In Stock: Usually ships within one business day.
This very economical Celestron 2” mirror diagonal with 1.25" eyepiece adapter can be used both in refractor telescopes with 2” focusers, and on all Schmidt-Cassegrain telescopes . . .

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$72.95
List Price: $112.95



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2' Starbright XLT enhanced aluminum mirror diagonal, with compression ring eyepiece holder and 1.25' adapter
 
Celestron - 2" Starbright XLT enhanced aluminum mirror diagonal, with compression ring eyepiece holder and 1.25" adapter 
Our Product #:  7718
Celestron #: 93526

In Stock: Usually ships within one business day.
This 2” first surface mirror diagonal for refractors has a 1.25" eyepiece adapter and Starbright XLT enhanced multicoatings for better than 96% reflectivity . . .

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$139.95
List Price: $198.00



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2' Starbright XLT enhanced aluminum mirror diagonal for SCTs, with compression ring eyepiece holder and 1.25' adapter
 
Celestron - 2" Starbright XLT enhanced aluminum mirror diagonal for SCTs, with compression ring eyepiece holder and 1.25" adapter 
Our Product #:  7719
Celestron #: 93527

In Stock: Usually ships within one business day.
This 2” first surface mirror diagonal for Schmidt-Cassegrains has a 1.25" eyepiece adapter and Starbright XLT enhanced multicoatings for better than 96% reflectivity . . .

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$139.95
List Price: $198.00



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2' focuser to SCT rear cell adapter
 
JMI - 2" focuser to SCT rear cell adapter 
Our Product #:  AD2SCT
JMI #: ADPT2THREAD

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This adapter converts a 2" focuser drawtube to a standard Schmidt-Cassegrain 2" rear cell thread . . .

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$39.00



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2” 99% reflectivity dielectric mirror diagonal, with 1.25” adapter
 
Meade - 2” 99% reflectivity dielectric mirror diagonal, with 1.25” adapter 
Our Product #:  5000D2
Meade #: 07677

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This 90° 2” mirror star diagonal uses premium dielectric coatings for an exceptionally high 99% reflectivity . . .

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$119.00



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adapter to use 2' refractor diagonals and 2' accessories on Schmidt-Cassegrains
 
Meade - adapter to use 2" refractor diagonals and 2" accessories on Schmidt-Cassegrains 
Our Product #:  MSCT2
Meade #: 07085

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This two-part adapter tube lets you use 2” refractor-type star diagonals on a Schmidt-Cassegrain telescope's threaded rear cell . . .

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$39.95
List Price: $99.00



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