Explore Scientific


Explore Scientific 8.5mm 82° 2-inch O.D. Argon-Purged Waterproof Eyepiece Long Eye-Refief Eyepiece

The Explore Scientific 1.25" diameter barrel 82° Series 8.5mm Eyepiece is engineered to deliver a wide field of view with a long eye relief, making it ideal for planetary and deep-space observations.

Its long eye relief makes it extremely comfortable during long observation sessions while offering you the ability to utilize the averted vision techniques that allow you to see faint details of elusive objects like wispy nebulae and galaxies.


  • EMD anti-reflective multi-coatings ensure bright, high-contrast images
  • All eyepieces in the 82° Series are parfocal
  • A fold-down rubber eyecup prevents stray light from leaking into the eye, further boosting contrast
  • Argon-filled for water and fog proof performance
Focal length 8.5mm
Length 106mm
Width 50mm
Weight 280g; 9.9 oz.
Barrel Size/Type 1.25"
Eye Relief 16.3mm