Orion Twist-Tight Dielectric Mirror Star Diagonal 2-inch

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  • Innovative Twist-Tight clamping system
  • Lab tested Dielectric Coating
  • 99% reflectivity 
  • 2” barrel with 1.25” adapter
  • Machine anodized aluminium barrel 
  • Non-marring compression ring 
  • Threaded internal baffles 
  • Protective dust caps
OUR PRICE $379.95

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    The Orion 2” Twist-tight Dielectric Mirror Star Diagonal uses an innovative twist-tight clamping system to hold your eyepieces in place. Traditionally you would have a little thumb screw that would press against a brass compression ring to secure your eyepiece in place. The problem with thumb screws is that they often don’t grip your eyepiece strong enough or evenly, and you’re left with slight movements of the eyepiece in the focuser. Thumbs screws are also much slower and quite fiddly to tighten, especially when wearing gloves in cold weather.

    The Orion 2” Twist-Tight Dielectric Mirror Star Diagonal solves this issue by clamping your eyepiece in place with just one clockwise turn. It’s a much more secure hold minimizing any unwanted eyepiece movement and makes for faster tightening and releasing of eyepieces.

    Apart from the new twist-tight technology, The Orion 2” Twist-tight Dielectric Mirror Star Diagonal comes with all the same great features of the regular dielectric mirror diagonal.

    Featuring lab tested dielectric air to glass coatings it produces 99% reflectivity. This makes for high light throughput for increased brightness, producing high contrast and detailed viewing. Dielectric coatings are also more durable than enhanced aluminium coatings so you can expect years of usage without wear and tear.

    The Orion 2” diagonal is Ideal for any refractor or Cassegrain with a 2” focuser and comes with a 1.25” adapter. This Adapter will allow you to use all your favourite 2” and 1.25” eyepieces. The Machine anodized aluminium barrel increases viewing contrast via the threaded internal baffles, minimizing any internal reflections.

    Unlike most diagonals, the 2” nosepiece is threaded, allowing you to swap between like-sized eyepieces without having to unscrew the filter every time you want to change the eyepiece. Orion includes protective dust caps so your item stays protected from the elements when not in use.

    The Orion 2” Dielectric Mirror Star Diagonal requires approximately 11cm inward focus travel relative to an eyepiece’s focus position without the diagonal. 

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