Orion 1.25" 45° Correct-Image Prism Diagonal


Orion 1.25" Correct-Image prism diagonal.


  • 45° Bend
  • Provides a correctly orientated image for terrestrial viewing 
  • For terrestrial or astronomical use, this diagonal produces an right-side-up, nonreversed image
  • Fully coated prisms for superior image fidelity
  • Accepts 1.25" eyepieces

For terrestrial viewing with a refractor or Cassegrain telescope, use of a correct-image (or image erecting) prism diagonal may be desirable. The image through the eyepiece image will appear upright and non-reversed, matching the naked-eye orientation. So a correct-image diagonal is essential for terrestrial viewing with the above telescope types and is useful for astronomical viewing for those that prefer to have the view through the telescope match the naked-eye orientation. Lenses are fully multi-coated and threaded for filters. Note that the 45-deg Orion Correct-Image Prism Diagonal requires 5/8" more focus travel than typical diagonals. Diagonals are not recommended for use in reflector telescopes.


The physical stock of this product is kept at the official importer.  Our latest information is that there is stock, but upon receipt of an order we will confirm availability of stock at the importer, typically within 24 hours.  If available, the product will only be ordered from the importer upon receipt of the full purchase price.  Delivery to our office is typically 2 to 4 working days.  Collection at the importer warehouse can be arranged.
Availability typical 2 to 4 days

Note:  The price on our website is based upon the latest price list received from the importer and should be correct.  However, there may be delays before our online price reflects the updated price.  We will honour the price as far as possible, but reserve the right to review the price.

Add to Cart:

  • Model: OR_7216
  • Shipping Weight: 0.3kgs
  • 2 Units in Stock
  • Manufactured by: Orion

This product was added to our catalog on Thursday 06 August, 2009.

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