Friday, December 23, 2011

Stellarvue Enhanced 2 Inch Dielectric Diagonal D1029ED

Stellarvue Enhanced
Stellarvue Enhanced 2 Inch Dielectric Diagonal D1029ED
by Stellarvue

Buy new: $189.00

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Review & Description

Stellarvue Enhanced 2 Inch Dielectric Diagonal D1029ED

Product Details

  • Brand: Stellarvue
  • Model: D1029ED

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Tuesday, December 20, 2011

Astro Optics 90{degrees} Hybrid Diagonal .965" to 1-1/4"

Astro Optics
Astro Optics 90{degrees} Hybrid Diagonal .965" to 1-1/4"
by Astro

1 used & new from $24.99

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Review & Description

This Astro Optics 90° hybrid star diagonal gives you greater versatility. A hybrid diagonal allows you to use 1.25" eyepieces on a telescope with a .965" focuser. Works with any refractor that has a .965" focuser and older (American made) Celestron C90 spotting scopes. Larger 1.25" eyepieces have a wider field of view and better eye relief than .965" eyepieces. The housing is made of strong and durable ABS plastic.

Product Details

  • Brand: Astro
  • Model: AO-965-125-HYB-D

Features

  • A hybrid diagonal allows you to use 1.25" eyepieces on a telescope with a .965" focuser.
  • This Astro Optics 90° hybrid star diagonal gives you greater versatility.

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Sunday, December 18, 2011

2" Orion Refractor Telescope Mirror Diagonal

2 Orion
2" Orion Refractor Telescope Mirror Diagonal
by Orion

Buy new: $79.99

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Review & Description

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-deg 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.

Product Details

  • Brand: Orion

Features

  • Mirror diagonal with a 90 degrees design features polished optics to yield maximum performance of big 2" telescope eyepieces
  • 2" diagonal for use with refractor telescopes
  • Accepts 2" eyepieces and includes 1.25" eyepiece adapter for use with smaller 1.25" eyepieces and accessories
  • Fits 2" focusers on refractor telescopes
  • A convenient accessory for switching between large 2" and 1.25" eyepieces when viewing with a refractor telescope

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Friday, December 16, 2011

2" Orion Schmidt Cassegrain Mirror Diagonal

2 Orion
2" Orion Schmidt Cassegrain Mirror Diagonal
by Orion



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Review & Description

Many observers prefer to use a good-quality mirror diagonal instead of a prism diagonal with high-end telescope systems. The mirror in this 90-deg diagonal is meticulously polished to yield maximum performance. Housings are made of black-anodized aluminum. Barrels are internally blackened. Accepts both 2" and 1.25" eyepieces (with included adapter). The 2" eyepiece holder has two locking setscrews for maximum eyepiece security. This diagonal renders images that are right-side up and reversed left to right and, therefore, is not recommended for terrestrial observing. Diagonals are not recommended for use in reflector telescopes.

Product Details

  • Brand: Orion

Features

  • The mirror of this 90 degrees diagonal are polished to yield maximum performance
  • 2" diagonal designed for use with Schmidt-Cassegrain telescopes
  • Accepts 2" eyepieces, includes 1.25" eyepiece adapter for use of smaller telescope oculars
  • Threads onto rear cell of Schmidt-Cassegrain telescopes
  • Provides comfortable night-sky viewing orientation

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Thursday, December 15, 2011

Celestron Diagonal, Erect Image

Celestron Diagonal
Celestron Diagonal, Erect Image
by Celestron
3.0 out of 5 stars(1)



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Review & Description

Celestron?s Erect Image Diagonals are an Amici prism design. This design allows you to look into the telescope at a 45 angle, at images that are oriented properly, meaning the image is upright and correct from left to right. Use of Celestron?s .96" to 1-1/4" 45 Erect Image Diagonal on a telescope equipped with .96" eyepieces means greater versatility. This diagonal will allow you to use 1-1/4" eyepieces, to obtain a larger field of view and better eye relief. A 901-1/4" Erect Image Diagonal is available for those who prefer that angle. A Star Diagonal lets you view objects that are at a 90 angle from the direction the telescope is pointing, thereby allowing comfortable viewing when the telescope is pointed at, or near, the zenith (i.e. directly overhead). The resulting image is right side up, but will be reversed from left to right.

Product Details

  • Brand: Celestron
  • Dimensions: 1.00 pounds

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Orion 1.25" Prism Star Telescope Diagonal

Orion 125
Orion 1.25" Prism Star Telescope Diagonal
by Orion

Buy new: $39.99 $29.99

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Review & Description

This precision 90-deg star diagonal feature fully coated prisms, delivering superior image fidelity. 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. It produces 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. Fits in 1.25" focusers and accepts 1.25"-diameter eyepieces.

Product Details

  • Brand: Orion

Features

  • For astronomical use, this diagonal produces an image that's right-side-up, reversed left to right
  • Fully coated prisms for superior image fidelity
  • Accepts 1.25" telescope eyepieces
  • Useful fro refractor and Cassegrain telescopes - not recommended for reflectors
  • Makes it easier to navigate the nigth skies with a telescope

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Wednesday, December 14, 2011

Orion 1.25" Enhanced Mirror Star Telescope Diagonal

Orion 125
Orion 1.25" Enhanced Mirror Star Telescope Diagonal
by Orion

Buy new: $69.99

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Review & Description

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 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 housings feature machine-threaded baffles for high contrast and nonmarring compression ring collars for securing the eyepiece. Nosepiece barrels are threaded to accept filters. Endcaps included.

Product Details

  • Brand: Orion

Features

  • The precision flat mirror in this 90 degrees diagonal is meticulously polished to yield excellent performance
  • Anodized aluminum housings are internally blackened for high contrast views free of glare
  • Fits 1.25" telescope focusers, accepts 1.25" eyepieces
  • Enhanced Aluminum mirror coatings yield 97% reflectivity for bright clear views
  • Includes dustcaps for storage

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Meade #937 2-Inch Diagonal Mirror

Meade 937
Meade #937 2-Inch Diagonal Mirror
by Meade

Buy new: $49.99 $44.95
5 used & new from $29.23

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Review & Description

For DS-2060/2070/2080 models

Product Details

  • Brand: Meade
  • Model: 07221
  • Dimensions: 8.00" h x 4.00" w x 8.00" l, 1.00 pounds

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Cstar EA-125D Dual-size Telescope Erect Image Lens

Cstar EA125D
Cstar EA-125D Dual-size Telescope Erect Image Lens
by Cstar
4.0 out of 5 stars(1)



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Review & Description

Cstar Optic's new Dual Size Erect Image Lens changes your Telescope into a Spotting Scope. Most Telescopes give an up-side-down and reversed image which is acceptable for night sky viewing, but very inconvenient for day-time land viewing. Cstar's new Erect Image Lens corrects the up-side-down image to be right-side-up and correct from left to right just like you see with your own eyes but just at a higher power. Cstar Solves the up-side-down, reversed telescope image problem by providing a new erect image lens which is adaptable to telescopes which take both .965 inch eye-pieces or 1.25 inch eye-pieces. This is a great accessory for your Cstar telescope or to put on most other different brands of telescopes. The dual size capability allows you to use either .965 inch or 1.25 inch size eye-pieces. Moreover, you can now turn your Telescope into a Spotting Scope and Telescope All in 1 and use it for all occasions.

Product Details

  • Color: Silver and Black
  • Brand: Cstar
  • Model: EA-125D
  • Dimensions: 5.00" h x 10.00" w x 10.00" l,

Features

  • Turn your telescope into a spotting scope with these lenses
  • Corrects up-side-down and left-to-right image rendering
  • Perfect for either .925-inch or 1.25-inch eyepieces
  • Works with Cstar and other brand telescopes
  • Cstar's new Erect Image Lens corrects the up-side-down image to be right-side-up and correct from left to right just like you see with your own eyes but just at a higher power.

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Astronomy Technologies 1.25" 45 Degree Correct Image Diagonal AT1E

Astronomy Technologies
Astronomy Technologies 1.25" 45 Degree Correct Image Diagonal AT1E
by Astronomy Technologies
Date first available at Amazon.com: November 17, 2011



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Review & Description


This premium 45 degree correct image diagonal lets you use your telescope as a terrestrial "spotting scope" with 1.25" eyepieces for fully corrected viewing in catadioptric telescopes with a 1.25" visual back, or in refractors that accept 1.25" diagonals. The precision image-correcting prism is made of high-density BaK-4 glass and is fully multicoated for excellent light transmission. A non-marring compression ring with a thumbscrew holds eyepieces firmly in place. There is a slanted-side safety groove cut into the 1.25" tube that slips into the telescope focuser. Its slanted sides catch the focuser thumbscrew to keep the diagonal from falling out of the eyepiece holder should the thumbscrew accidentally loosen in use. The inside of the 1.25" tube has anti-reflection threading and is coated with ultra flat black paint for enhanced image contrast. The 1.25" tube is also threaded for filters. Dust caps are provided for both ends to protect the diagonal when not in use.

Features
* Slanted-side safety groove * Threaded to accept 1.25" filters * Includes storage dust caps

Product Details

  • Brand: Astronomy Technologies

Features

  • Fully correcting Bak4 Prism.
  • Fully multi-coated optics for high-light transmission
  • 45 degree angle for comfortable terrestrial viewing
  • Internally baffled and blackened for increased contrast
  • Non-marring compression ring

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Tuesday, December 13, 2011

2" Orion Dielectric Mirror Star Diagonal

2 Orion
2" Orion Dielectric Mirror Star Diagonal
by Orion

Buy new: $129.99

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Review & Description

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.

Product Details

  • Brand: Orion

Features

  • 90 degrees 2" mirror diagonal features sophisticated, lab-tested dielectric coatings that provide an astounding 99% reflectivity
  • Dielectric mirror coatings are more durable than enhanced aluminum coatings and provide higher reflectivity for maximum view brightness
  • Machined and anodized aluminum housing features machine-threaded glare baffles for high contrast
  • Nosepiece barrel is threaded to accept 2" Orion filters, a 2"-1.25" step-down adapter is included
  • The diagonal is a great way to make nighttime viewing orientations through a refractor telescope more comfortable

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Orion 1.25" Correct-Image Star Telescope Diagonal

Orion 125
Orion 1.25" Correct-Image Star Telescope Diagonal
by Orion
5.0 out of 5 stars(1)

Buy new: $49.99

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Review & Description

This precision 90-deg star diagonals features fully coated prisms, delivering superior image fidelity. Housings are plastic with thumbscrew to secure the eyepiece in place. This 90-deg diagonal yields correctly oriented images (right-side up and nonreversed). It's perfect for terrestrial use or for amateur astronomers who want a view that matches the orientation of a star chart. Requires no extra focus travel.

Product Details

  • Brand: Orion

Features

  • For terrestrial or astronomical use, this1.25" 90 degrees diagonal produces a right-side-up, nonreversed image
  • Provides a view through your telescope that matches normal daytime orientation for added comfort and ease of use
  • Requires no extra focus travel
  • Fully coated prisms for superior image fidelity
  • Not intended for use with reflector telescopes

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1.25" Orion Dielectric Mirror Star Diagonal

125 Orion
1.25" Orion Dielectric Mirror Star Diagonal
by Orion
5.0 out of 5 stars(2)

Buy new: $89.99

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Review & Description

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.

Product Details

  • Brand: Orion

Features

  • 90° diagonal features sophisticated, lab-tested dielectric coatings that boast an astounding 99 percent reflectivity
  • Dielectric mirror coatings are more durable and more reflective than enhanced aluminum coatings
  • Diagonal provides a comfortable 90-degree viewing orientation when observing the night sky through a refractor, Maksutov-Cassegrain (Mak-Cass) or Schmidt-Cassegrain telescope
  • Machined and anodized aluminum housing features machine-threaded baffles for optimized contrast
  • 1.25" nosepiece barrel is threaded to accept like-sized Orion eyepiece filters

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Monday, December 12, 2011

Celestron 2-Inch XLT Diagonal Mirror (for SCT Telescope)

Celestron 2Inch
Celestron 2-Inch XLT Diagonal Mirror (for SCT Telescope)
by Celestron
4.0 out of 5 stars(4)

Buy new: $215.95 $114.61
6 used & new from $67.49

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Review & Description

Introducing our new 2" XLT Diagonal. This high quality multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces. Featuring our premier StarBright XLT coatings, this unit has an interferometer tested 10th wave flat mirror. This premium diagonal is designed to work with Schmidt-Cassegrain telescopes.

Product Details

  • Color: Black
  • Brand: Celestron
  • Model: 2-inch XLT Diagonal mirror
  • Dimensions: 8.00" h x 8.00" w x 7.00" l, 2.80 pounds

Features

  • Celestron's high performance XLT coating for maximum reflectivity >96%
  • Interferometer tested 10th wave flat mirror
  • All machined housings for accurate optical alignment
  • Aluminum case for storage and protection

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Celestron 93519 2" Mirror Diagonal for Schmidt-Cassegrain Telescopes

Celestron 93519
Celestron 93519 2" Mirror Diagonal for Schmidt-Cassegrain Telescopes
by Celestron



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Review & Description

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.

Product Details

  • Brand: Celestron
  • Model: 93519
  • Dimensions: 2.00" h x 3.00" w x 4.00" l, 2.00 pounds

Features

  • Allows you to take advantage of the wider field of view provided by 2-inch eyepieces
  • Includes adapter for 1.25-inch eyepieces and refractor telescopes
  • Fits all rear cells of Schmidt-Cassegrains

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Astro Optics .965" Star Diagonal

Astro Optics
Astro Optics .965" Star Diagonal
by Astro
1.0 out of 5 stars(1)



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Review & Description

A star diagonal lets you view objects that are at a 90° angle from the direction the telescope is pointing, thereby allowing comfortable viewing when the telescope is pointed at, or near, the zenith (i.e. directly overhead). The resulting image is right side up, but will be reversed from left to right. Fits any brand and size of telescope with a .965" focuser. Comes with a set of dust caps. Housing is plastic.

Product Details

  • Brand: Astro

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Meade Series 5000 2-Inch Enhanced Diagonal Mirror

Meade Series
Meade Series 5000 2-Inch Enhanced Diagonal Mirror
by Meade

Buy new: $149.00
2 used & new from $149.00

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Review & Description

Enhanced dielectric coatings with 99% Reflectivity. Slip fit 2-Inch Diagonal with 1.25-Inch adapter. For all LX models. Use 07085 SC thread to 2-Inch Accessory Adapter for LX90s and other SC thread screw-on only systems. Boost eyepiece performance with the 2-Inch Series 5000 enhanced diagonal. This thermally stable, interferometer tested, enhanced dielectric-coated diagonal boasts 99% reflectivity. Also includes 1.25-Inch eyepiece adapter.

Product Details

  • Brand: Meade
  • Model: 07677
  • Dimensions: 11.25" h x 8.00" w x 8.75" l,

Features

  • Enhanced dielectric coatings with 99% reflectivity over the visual spectrum.
  • Render images which are upright but laterally reversed.
  • Also accepts 1.25" filters.

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