Don’t put your standard-issue diagonal into your high-quality refractor or Cassegrain telescope; You can end up losing 10% or more of the light collected by the telescope’s optics! Use this Orion Enhanced 1.25 inch star diagonal instead. Orion has used lab-tested enhanced coatings to reflect 97% of the inbound light straight to your eyepiece, creating brighter images compared to standard diagonals. The Orion Star Diagonal’s beautifully machined and anodised aluminium housings feature machine-threaded baffles for extra-high contrast. Not to mention gentle, non-marring compression ring collars for securing the eyepiece. This Orion Enhanced star diagonal’s 1.25 inch nose-piece barrel is conveniently threaded to accept 1.25″ filters. Protective dust-caps included.
This diagonal requires approximately 9 cm inward focus travel relative to an eyepiece’s focus position without the diagonal. Diagonals are not suitable for use with Newtonian reflector telescopes due to insufficient focus travel.
