William Optics Quartz Dielectric 2 Inch Diagonal

If what you are looking for is the highest achievable brightness, contrast and sharpness during critical observations with high-end instruments, the WO 90° 2 inch mirror Dielectric star Diagonal is a fine choice.

This is one of the best diagonal available anywhere and is a premium product at a discounted price!

Specification:

• Ultra High Dielectric 99% reflectivity
  
• Highest precision surface with 10mm-thick mirror.
  
• 2"- 1.25" adapter with brass clamping ring.
  
• Inside diameter (48mm): threaded to fit a variety of filters.
  
• Weight : 470 g