Explore Scientific


Explore Scientific 9mm 100° 2-inch O.D. Argon-Purged Waterproof Eyepiece

The100°-Series 9mm Eyepiece from Explore Scientific is an ultra-wide field telescope eyepiece designed for planetary and deep-space observations.
The anti-reflective multicoated optics ensure bright, high-contrast images with true color transmission across the entire wide-field view. Its fold-down rubber eyecup prevents stray light from leaking into your eye, while also providing a comfortable viewing experience for extended periods of time.

  • A huge apparent field of view gives the observer a panoramic visual experience
  • Anti-reflective multicoated optics ensure bright, high contrast images
  • The eyepiece is internally sealed and purged with inert, dry argon gas, which maximizes the life of its internal coatings.
  • Wide exit pupil, long eye relief ensure comfortable long-duration observation through the telescope
  • The eyepiece is tested by submerging it down to 1 meter of water for 30 minutes.
  • Fully multi-coated and edge-blackened to produce maximum contrast.
Focal length 9mm
Length 145mm
Width 60mm
Weight 602g; 21.2 oz.
Barrel Size/Type 2.00"
Eye Relief 12.5mm
Field Stop Diameter 15.7mm