Megrez 90 Doublet APO

The Williams Optics Megrez 90mm Doublet APO Refractor Telescope is one of the most sought after refractors of the year, and is viewed by many as a breakthrough in both mechanical and optical perfection.

With a highly precise CNC machined lens cell, doublet air spaced lens, in an adjustable lens cell, and the highest-quality coatings it is optically unbeatable.

Power Linear Focuser

The extra smooth heavy duty 2.5" Power Linear focuser is 360 degree rotatable, has a graduated scale for precise camera alignment and is a real treat to use during astrophotography.

The finish is as you would expect from Williams Optics, top quality. A powder-painted white CNC-machined aluminum tube, golden finish, retractable dewshield, 360 deg. rotatable PowerLinear focuser, dewshield cap and 90mm mounting rings.

Every telescope is subjected to rigerous testing several times for both mechanical and optical performance (high-power star testing).

And to help protect your investment there is a practical soft stow away and although you will never need it, there is a 2-year warranty.

Megrez 90


  • Aperture 90mm
  • Focal Ratio F/6.2
  • Focal Length 558mm
  • Objective Type Doublet FPL-53 Air Spaced
  • Fully Multi-Coated, STM coatings
  • Resolving Power 1.35"
  • Limiting Magnitude 11.5
  • Lens Shade Retractable
  • Linear Focuser 360° Rotating Camera-angle Adjuster
  • 1:10 Dual Speed Fine Focus
  • 1.25" Adapter Included
  • 1.25" Adapter Brass Compression Rings
  • Tube Diameter 90mm
  • Total Length 435 mm Fully Retracted, 520 mm Fully Extended.
  • Total Weight 7.3 lbs. (3.35kg)
  • Case High Quality Aluminum Case
  • Case Dimensions
  • (WxHxD) 21"(W) x 8 "(H)

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