Product Details

• Description
• Specifications
• Included Items
• Reviews

• The William Optics ZenithStar 81 mm aperture Doublet APO Refactor is an extremely versatile telescope ideal for both astrophotography and general photography. It provides a sharp image to any DSLR, and pristine clarity for both visual observers and astrophotographers. This scope series is even capable of handling full frame sensors.

  

  This air-spaced 81 mm series utilizes FPL53 glass for the clear detail provided and sharp colors. Similar to past models, this series also includes a 1:10 dual speed, 2.5-inch, R&P ultra robust focuser. 

  

   

  William Optics has crafted this series as an f/6.9 for respectable speed. On top of that, each scope in the series comes with a built-in, removable, clear Bahtinov mask for convenience in focusing. 

  

  These OTAs include a dual-side dovetail compatible with Vixen and Arca Swiss stylings.

  

   

• specifications

  Aperture	81 mm (3.25")
  Focal Length	559 mm
  Focal Ratio	f/6.9
  Free Shipping	Yes
  Glass Type	53
  Optical Design	Doublet Refractor

• included items

  • ZenithStar 81 Telescope
  • Protective Soft Case