Focus Scientific

Sky-Watcher W Series 20mm Eyepiece

Sky-Watcher's W Series wide angle eyepieces provide 32% more field of view than traditional Plossl eyepieces, allowing you to view more sky at one time. They feature better eye relief than Plossl eyepieces as well, especially in the shorter focal lengths (6mm, 9mm). They provide sharp images across the full field of view.


  • Focal length: 20mm
  • 66° apparent field of view
  • Eye relief: 18mm (.7")
  • Number of elements: 4
  • Multicoated optics
  • 1.25" barrel threaded for standard filters
  • Rubber eyecup
  • Dimensions: 5.8cm x 3.3cm (2.3" x 1.3")
  • Weight: 114g (4oz)
  • Two year limited warranty

Browse our website for other eyepieces in this series.