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Celestron 1.25" Dielectric Star Diagonal with Twist-Lock

SKU: CEL-93571
$154.95
 

Celestron 1.25" Dielectric Star Diagonal

  • This premium 1.25" diagonal offers diffraction-limited optics as well as dielectric coatings for enhanced telescope views
  • With a 90º viewing angle, this diagonal facilitates comfortable viewing with refractor or Cassegrain-style telescopes
  • Over 99% surface reflectivity thanks to 58 layers of dielectric coatings ensures that the greatest amount of light accumulated by the telescope ends its journey at your eyepiece
  • Twist-lock improves optical alignment by keeping the eyepiece centered in the diagonal
  • Compatible with all standard accessories such as eyepieces, Barlow lenses, and threaded filters, that have a 1.25" barrel size

For guaranteed maximum light transmission without compromising on optical quality, the 1.25" Dielectric Star Diagonal with Twist-Lock from Celestron is an excellent choice. Experience images that are both brighter and sharper by upgrading your existing star diagonal to this premium model.

This star diagonal reflects the telescope’s light path 90° to provide a more comfortable viewing angle. In addition, the glass has 58 layers of dielectric coatings, which provide an over 99% reflective surface, delivering the maximum amount of light to the eyepiece. The twist-lock eyepiece holder secures any 1.25” eyepieces while keeping them centered in the diagonal, thus providing best opto-mechanical alignment between the telescope and eyepiece. Unlike traditional thumb screws, the twist-lock cannot scratch or engrave the barrel of your eyepieces. The twist-lock has an integrated 1.25” barrel stop that prevents 1.25” accessories with long barrels from damaging the mirror.

The twist lock ring is orange anodized for increased visibility while the remainder of this diagonal’s construction consists of black anodized aluminum. A threaded and flat black painted interior works to prohibit glare. Taken together, the Celestron 1.25” Dielectric Star Diagonal’s features and high-end finishes make it one of the best 1.25” star diagonals ever offered by Celestron in terms of quality.

Standard Star Diagonals vs Dielectric Star Diagonals

Reflectivity and optical quality are the key specifications for a star diagonal. This dielectric diagonal delivers top performance in both categories, with an over 99% reflective mirror and diffraction-limited optical quality to ensure that virtually all the light collected by the telescope reaches your eyepiece without the diagonal having an impact on optical performance. Using a lower quality star diagonal can both dim the view and degrade optical quality. You can instantly improve the views you experience through your telescope by simply swapping out its diagonal for a premium Celestron Dielectric Star Diagonal.