Upgrade your existing star diagonal to this premium one and enjoy brighter, sharper images without replacing your telescope.
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.
All the diagonal's mechanical parts are made of machined black anodized aluminium, except the twist lock rings, which are orange anodized for visibility. The interior of the barrel is glare threaded and painted flat black to prevent glare. With all its features and these high-end finishes, the Celestron Dielectric Star Diagonal, 1.25" with Twist-Lock is one of the highest quality 1.25" star diagonals that Celestron has ever offered.
Features
- Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings
- Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes
- 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece
- Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment
- Accepts standard eyepieces, Barlow lenses, threaded filters, and other accessories with a 1.25" barrel
Specifications
Diagonal size: 31.75mm (1.25")
Diagonal type: Mirror
Glass material: BK7
Coatings: Dielectric, 58 layers
Reflectivity; Over 99%
Optical quality; Diffraction limited
Eyepiece holder: 1.25", Twist-Lock
Compression ring: Yes, single ring
Housing construction: Machined aluminum black anodized
Barrel interior: Glare threaded and painted flat black
Threads for filters: Yes, 1.25"
Dimensions: 114.3mm x 50.8mm x 88.9mm
Weight: 212.6 g
