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diagonals & adapters

Celestron 1.25" Erect Image 45° Diagonal - 94112-A

Celestron   ——   SKU: CEL-94112-A
$52.65 CAD
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Celestron 1.25" Erect Image 45deg Diagonal

  • The Celestron 1.25" Erect Image Diagonal is a great accessory for daytime terrestrial viewing with your telescope
  • This 1.25” diagonal produces right side up and left-to-right correct images when used with refractors and catadioptric (Schmidt-Cassegrain) telescopes
  • Inserts into 1.25” focusers or visual backs; Accepts standard 1.25” eyepieces

Did you know that most telescopes work well for daytime viewing as well as for astronomy?  If you have a refractor or a catadioptric telescope (the Schmidt-Cassegrain is the most popular example) and you would like to use it for terrestrial observations, the most useful additional accessory you can buy is the 1.25" 45degree Erect-Image Diagonal by Celestron. 

If you look through your telescope with the standard mirror or star diagonal installed, you will notice that objects may be either upside down, flipped so that you see a mirror image, or a combination of the two.  This is fine for observations of celestial objects, but it can be a little confusing when you are trying to track a boat as it moves through the water, or an eagle as he flies towards his perch.  

Luckily, this is an easy problem to correct.  Simply remove the standard diagonal from the telescope’s focuser or visual back, and install the Celestron 45º Erect Image Diagonal.  Now, when you insert an eyepiece, objects will be right side up and left-to-right correct.  The 45º angle of this Amici prism diagonal is very comfortable for daytime observations, where the telescope is often in a horizontal position.