Diagonals

All New 90 degree high quality Erecting prism With helical Focuser barrel.

Antares 92% Enhanced 2" SCT Fitting diagonal.

The new Sky-Watcher 90° Polar Scope Eyepiece now makes polar aligning your mount so much easier! The eyepiece sleeve securely clamps over the standard polar scope eyepiece using three non-marring, plastic-tipped, knurled metal thumbscrews.

Available in either 1.25" or 2" sizes the mirrors inside these diagonals have undergone a special high-reflectivity multi-coating process, allowing them to reflect 99% of the precious gathered starlight, providing exceptional brightness and contrast. (Standard diagonals typically reflect 90-95% of light).

William Optics new 45 Deg. EP will work with any 1.25" eyepieces and scopes with 1.25" eyepiece holders. It will turn upside down images right side-up and give correct left-to-right image.

This high precision CNC Engineered metalwork, looks as good as it performs. Available as either a 2" push fit for refractor telescopes or a low profile SCT fitting.

High quality 2" dielectric coated mirror diagonal. Features a high quality 1/10th Lambda mirror for ultra reflectivity. All housed in a well made body. Comes complete with a 2" - 1.25" adaptor for use with most eyepieces.

High quality 2" dielectric coated mirror diagonal. Features a high quality 1/10th Lambda mirror for ultra reflectivity. All housed in a well made body. Comes complete with a 2" - 1.25" adaptor for use with most eyepieces.

Baader's T-2, 90 degree prism gives extremely bright and very high contrast images to the viewer through very high transmission rates. With the release of this product Baader have maintained their exceptional standards of optical manufacturing.

The Sky-Watcher 2” Erecting Prism is angled at 45 degrees and will provide a fully corrected image when used with Refractor or Maksutov-Cassegrain telescopes

This high precision CNC Engineered metalwork, looks as good as it performs. Available as a 2" push fit model or low profile SCT model.

High quality erecting prism with Red anodized plate , the complete housing is made by 6061T Aluminium by CNC. This 1.25" 90° erecting prism will very useful for daytime observations.

1.25” RedCat Erecting Prism in silver for a perfect match to the new SpaceCat 51! Now you can use your SpaceCat during the day with correctly orientated views.

Introducing New model William Optics Dura-Bright diagonal - a dramatic step forward in the evolution of mirror diagonals!

The Takahashi muli-coated 90 degree diagonal is the perfrect complement to Takahashi eyepieces. This high quality diagonal features the Takahashi compression ring that firmly secures the eyepiece without marring the finish.

High quality made 2" SCT fit 45° Erect Image Diagonal. Comes with the 2" - 1.25" reducer. This handy diagonal screws onto the back of any standard SCT and will provide the correct orientation.