Celestron 90 Degree Angle Star Diagonal, 1.25"
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Celestron 90 Degree Angle Star Diagonal, 1.25"

SKU: CNDIS MFR: 94115-A
(6)20 questions, 50 answers
$44.95
$58.95
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Key Features

  • Enjoy comfortable telescope viewing with this 90-degree star diagonal for relaxed stargazing.
  • Achieve optimal viewing angles with this 1.25" diagonal, a must-have telescope accessory.
  • Experience brighter images; this star diagonal maximizes light transmission for clearer views.
  • Easily connects to your telescope; this Celestron diagonal enhances your astronomical setup.
  • Durable construction ensures long-lasting performance for all your telescope adventures.
  • Perfect for refractors, this 90-degree diagonal provides correct image orientation for viewing.
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Questions & Answers

paul m : How does it attach to a Celestron 31041? The telescope is tubular, and this diagonal has a flat base...can't imagine how it goes on.MICHAEL B : This is made for a refactor or a Cassegrain telescope. And goes between the eyepiece and the telescope. It is not really for Newtonian scopes.MICHAEL R : The Celestron diagonal that I purchased (many years ago) was a 45 degree that I use in my Celestron C90 telescope. That scope has a 0.96" opening for an eyepiece and by inserting the 0.96 diameter silver end into the scope I was able to use standard 1.25 inch diameter oculars in the black holder end. The diagonal in the picture that accompanied your question looks like it simply changes a 1.25 inch to a 1.25 inch at a right angle to the straight in viewing normal to a Celestron. Instead of putting your eyepiece into the telescope directly, you simply put the silver end of the diagonal into the telescope and the ocular (eyepiece) into the 90 degree end of the diagonal. This gives more comfortable viewing for most orientations of the scope.Gregory S : The 90 degree star diagonal is not used on the Celesron 31041 telescope. Went on the Celestron web site and found the manual. An eyepiece fits directly into the eyepiece adaptor and focusing tube. Hope this helped.CRAIG P : Your lens slips in one end and it attaches to the telescope on the other end. The flat area is a mirror inside that reflects the image.
Paul S : Will this fit the Celestron C90 1000mm f/11 telescope?MICHAEL R : My C90 Celestron needed a diagonal that fit into the .96" opening in the scope and adapted to fit 1.25" eyepieces. This window is hiding the description of the item you are buying, so my answer is "I don't know what you're purchasing, but if it is an adaptor that goes from .96 to 1.25, the answer is yes.ROBERT S : Yes, as long as you already have a visual back on it. If you don't you can get one through Adorama.
jerome r : will the celestron 90 deg star diagonal 1 25. exactly replace the 45 deg that came with my scope ?MICHAEL B : As long as the barrel is the same 2.25”.JUAN J : It should.ALLEN M : yes it willJAY J : Yes, the 1.25 90 degree will replace the 45 degree eye piece as long as the 45 degree is also a 1.25 which your's very likely is.Sergio P : Yes, withou any problem. You will se right at left and left at right, as in any other 90 degrees.

Reviews about this item

Review Summary

2021-12-17T07:14:39

Rated 5 out of 5

Excellent

5 Stars all the way for Adorama. All my dealings with this company have been completely positive and satisfying. Sanders

SANDERS L.

2021-05-18T22:53:48

Rated 1 out of 5

Prism diagonal lacks professional qualities

For the price lacks brass compression ring for eyepiece protection. plastic body, prism openings are small restricting field of view of wider eyepieces. Prism design means one more optical element to reduce light throughput. I just got one of these in the mail as a Celestron telescope accessory. It's now up for sale as I won't use it. A highly reflective mirror diagonal of full aperture is far better. I've owned in excess of 50 telescopes of all kinds and brands over 50 years now. I tell it like it is.

BOB C.

2018-07-05T13:23:38

Rated 5 out of 5

90 degree Star diagonal

This is a prism, not mirror, which is better than most

MICHAEL B.

2017-06-23T09:37:18

Rated 5 out of 5

Celestron 90 degree star diagonal

This 90 degree star diagonal is a great improvement when viewing objects near the zenith! It really make viewing overhead much more comfortable and enjoyable.

STEPHEN K.

2016-06-14T08:46:16

Rated 5 out of 5

This is a very high quality diagonal with rich green multi coatings on both air to glass surfaces

This is a very high quality diagonal with rich green multi coatings on both air to glass surfaces. Viewing with this Celestron diagonal I am able to observe fainter stars then with any mirror diagonal that I've used and I've been observing for nearly 50 years. Highly recommended!

Daniel P.

2012-12-18T19:00:00

Rated 5 out of 5

90° Angle

I have a 45° Angle, it maded looking at the stars painful. This 90° Angle makes all the difference in the world. Thank you!

MoriaGirl

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About Celestron 90 Angle Star Diagonal

FEATURED REVIEWS

This is a very high quality diagonal with rich green multi coatings on both air to glass surfaces

By Daniel P.

This is a very high quality diagonal with rich green multi coatings on both air to glass surfaces. Viewing with this Celestron diagonal I am able to observe fainter stars then with any mirror diagonal that I've used and I've been observing for nearly 50 years. Highly recommended!

Excellent

By SANDERS L.

5 Stars all the way for Adorama. All my dealings with this company have been completely positive and satisfying. Sanders

Over the years, avid astronomers and stargazers have sought comfort and convenience during their celestial observations. The 90 Degree Angle Star Diagonal, 1.25", addresses this need with precision and ease. Designed to fit telescopes with a 1.25-inch eyepiece, this essential accessory diverts the light path by 90 degrees, enabling a more comfortable viewing position when your telescope is aimed skyward towards the zenith.

Crafted with high-quality optics, the star diagonal ensures that the views remain bright and sharp, enhancing your stargazing experience. The diagonal's clear aperture allows for maximum light transmission, ensuring that stellar objects appear vivid and full of contrast. While the image presented is right side up, facilitating an intuitive understanding of the night sky, it is important to note that it will appear laterally reversed, from left to right.

This star diagonal is not only a tool for comfort but also a means to protect your neck and back from strain during prolonged observation sessions. Its robust construction and secure fit ensure stability and durability, making it a reliable companion for both amateur astronomers and seasoned skywatchers.

Incorporating this 90 Degree Angle Star Diagonal into your astronomical setup will transform your viewing experience, allowing you to explore the cosmos with ease and relaxation. Whether you're tracking stars, planets, or other celestial wonders, this star diagonal is an indispensable tool that promises to elevate your observational endeavors.

Celestron 90 Angle Star Diagonal Features

  • 90 Degree Angle Star Diagonal designed for comfortable celestial viewing
  • Fits telescopes with a 1.25-inch eyepiece, ensuring compatibility with a wide range of models
  • High-quality optics for bright, sharp, and contrast-rich views of the night sky
  • Diverts light path by 90 degrees, facilitating comfortable viewing when telescope is aimed at zenith
  • Durable & stable construction, making it a reliable accessory for amateur & seasoned astronomers
  • Image presented is right side up but laterally reversed, enhancing observational understanding of the cosmos

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

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Key Features

  • Enjoy comfortable telescope viewing with this 90-degree star diagonal for relaxed stargazing.
  • Achieve optimal viewing angles with this 1.25" diagonal, a must-have telescope accessory.
  • Experience brighter images; this star diagonal maximizes light transmission for clearer views.
  • Easily connects to your telescope; this Celestron diagonal enhances your astronomical setup.
  • Durable construction ensures long-lasting performance for all your telescope adventures.
  • Perfect for refractors, this 90-degree diagonal provides correct image orientation for viewing.

What's in the box:

  • 2-Year Warranty