Kson O-III (Oxygen 3) Filter (Light Pollution) 2″ Telescope Eyepiece Filter


See Nebulae the way you were meant to

This extremely versatile filter can be used to cut out large amounts of light pollution and improve visibility  – It is often considered the most important filter to get after you have a UHC filter.  This one is 2″, so you can use it with your larger, 2″ eyepieces (See also our 2″ UHC and 2″ H-Beta filters we have available).

Astro Dog is Kson’s Authorised Australian Dealer – Genuine Stock, Actually made by Kson themselves, Shipped from Brisbane, Australia


  • Kson 2″ O-III (Oxygen 3) Filter
  • Plastic Case for safe, dust free storage

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Weight.2 kg
Dimensions22 × 10 × 9 cm

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