Explore Scientific


Explore Scientific 25mm 100° 2-inch O.D. Argon-Purged Waterproof Eyepiece

The Explore Scientific 2" diameter barrel 100°-Series 25mm Eyepiece is an ultra-wide field telescope eyepiece designed for planetary and deep-space observations.

Its wide exit pupil makes this eyepiece ideal for comfortable viewing for extended periods.


  • Ultra-wide 100° apparent field of view displays a broad image with minimal optical distortion, ideal for detailed observation
  • Wide exit pupil, long eye relief ensure comfortable long-duration observation through your telescope
  • Anti-reflective multicoated optics ensure bright, high contrast images
  • Images have true color transmission across the entire field of view, even as the observed object approaches the field stop.
Focal length 25mm
Length 140mm
Width 73mm
Weight 1177g; 41.5 oz.
Barrel Size/Type 2.00"
Eye Relief 14.5mm
Field Stop Diameter 41mm