William Optics Fluorostar 91 APO Triplet Refractor - Space Grey

Product Details

• Description
• Specifications
• Included Items
• Recommended Products
• Reviews

• The William Optics FLT 91 is the perfect apochromatic refractor for visual and photographic astronomers demanding excellence in a midsize telescope. The three-element optical design features a 91mm aperture using FPL-53 glass. The STM coatings and superb quality provide excellent optical performance and unmatched value.

  The Rotolock 2 inch adapter provides for a solid and efficient connection for a WO 2 inch diagonal, and other accessories.

  The retractable dew shield features a removable lens cover, with our patented Bahtinov Mask revealed by unscrewing the faceplate. The clear design allows for brighter star patterns and precise focusing for astrophotography.

  The Saddle Bar Handle offers a solid handle with a built-in dovetail chamber for use with the WO Uniguide scopes or other V-style guiding/finder scopes.

  The super-smooth field rotator includes markings for every degree and a solid thumbscrew position lock.

  The standard package comes with a soft carry case

• specifications

  Aperture	91mm (3.5")
  Dawes Limit	1.27 arcseconds
  Focal Length	540mm
  Focal Ratio	f/5.9
  Free Shipping	Yes
  Highest Magnification	182x
  Light Gathering Power	169x
  Optical Design	Triplet Refractor
  Tube Length	510mm
  Tube Weight	12.2 lb

• included items

  • William Optics Fluorostar 91 APO Triplet Refractor
  • V-Style Dovetail Saddle Plate
  • Visual Extension Tube
  • Soft Carry Case
  • Handle Bar
  • Built-in Bahtinov Mask