Sky-Watcher BK909AZ3 Refractor Telescope Black Diamond


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Sky-Watcher BK909AZ3 Refractor Telescope Black Diamond Product Info

The Sky-watcher EVOSTAR series are two-element, air-spaced, multi-coated objective achromatic refractors. They are truly outstanding, high-performance, high-resolution instruments manufactured to extremely high standards of optical and mechanical precision. With their long focal lenghs and breathtaking, diffraction limited optical performance, they are ideal for the detailed high-power study of the Moon, Planetary Surfaces and other objects in our solar system, giving crisp contrasty images. These telescope packages will stand you in great stead for a lifetime of serious astronomical viewing. Tube Material: Aluminium


Lens Material  
Focal Length 900mm
F/ratio F/10
Faintest Steller Magnitude 12.5
Finderscope 6x30*
Eyepiece(s) 1.25" Super 25 and 10*
Slow-motion Control Vertical & Horizontal
Piggyback Bracket Yes
Ground Board Diameter n/a
Motor Drive n/a
Tube Weight 2.49Kgs
Tripod Height 71-123cm
Shipping Carton Dimensions 103.5 x 45 x 25 cm3


  • Diameter/Aperture: 90mm
  • Focal Length: 900mm
  • Multi-coated achromatic objective lens
  • Aluminum tube
  • Dew cap/Sunshade
  • Adjustable Objective-lens Cell (available in 2001)
  • 6x30 finderscope for easy location of objects
  • Pre-assembled tripod for convenient and quick assembly - Smooth rack-and-pinion 1.25" focuser
  • 65% more light gathering power than 70mm
  • Perfect for serious beginners

Package Contents:

  • Sky-Watcher BK909AZ3 Refractor Telescope Black Diamond
  • 1.25" Super 25 and 10* Eyepieces
  • 6x30* Finderscope
  • Standard accessories may vary*

  • Model:
  • Stock Level: Out of Stock
  • Manufactured by: Sky-Watcher
  • Category: Telescopes

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