Erect Prism Diagonal (TDE100)


Erect Prism Diagonal (TDE100)

Regular price
$ 25.00
Sale price
$ 25.00
Unit price

This item is out of stock but you can place an order now and we’ll ship when it becomes available.


Most telescopes are designed for astronomical viewing, and come with a star diagonal that will flip the image. While this is fine for the sky surfing, it is preferred to see terrestrial objects, such as birds, in their correct orientation. This Erect Prism Diagonal accomplishes this image correction and, at the same time, places the eyepiece at a convenient 45-degree viewing angle.

It will fit most 1.25" focusers and will accept eyepieces with 1.25" barrels.


  • Image orientation is upright and corrected from left to right
  • 45º for comfort viewing
  • Designed for 1.25” focusers or adapters
  • One year limited warranty

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