Kson 80mm 400mm f/5 Mk III Rich Field Refractor, 2″ Fine Focuser OTA with Rings and Vixen Plate



Astrodog Exclusive – The MK III 80×400 Refractor – 2″ Fine Focuser, Rings & Vixen Plate Version

We’ve listened to what you want, and had it manufactured according to our strict specifications.

NEW Mk III Upgrades

  • 2″ Fine Focuser, allows the use of 2″ ultra low powered eyepieces to give truly rich field views.
  • Three screw compression ring system to securely hold heavier loadouts


  •  80mm Aperture
  • 400mm Focal Length
  • F/5
  • 2″ Fine Focuser
  • Achromatic, Doublet Refractor Design
  • Fully Coated, Cemented Lens with K9/F4 optical glass (Yes, we even tell you the glass type we used!)
  • Metal Dew Shield
  • Metal Finder Shoe
  • Beautiful, Pearl White Finish
  • Rings and Vixen Plate – The rings on these are something special.  The red deluxe rings were made with love and are fully servicable, 33% thicker and stronger than similar rings found on other scopes, and have extended knobs and grips which make tightening and detaching a breeze.

This model is suitable for use as a guider, a finderscope, or as a standalone widefield refractor.  It is fully compatible with the Kson Tracker, the KM MiniMount, as well as other mount systems which accept vixen style connections.

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Additional information

Weight 2.5 kg
Dimensions 50 × 19 × 14 cm


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