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Home Accessories Diagonals Telescope Diagonals Corrected For Daytime Celestron 45 Degree Erect Image Diagonal
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 an erect-image diagonal.
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 telescopes 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. Please Note: Not suitable for Newtonian ReflectorsUse your Refractor, SCT or Maksutov Cassegrain for fully corrected daytime views with this diagonal
Does the job perfectly This erecting prism allows me to use my Celestron 127-SLT as a spotter scope, by turning the image the right way up and making left and right movements intuitive. It works beautifully and is a great help. As ever, the advice and super-quick service from Harrison Telescopes was outstanding. Thanks! (31/08/2018) Boz - London, UK