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Explore Scientific  |  SKU: EPWP10020–01

Explore Scientific 100° Series 2" 20mm Waterproof Eyepiece

$799.99 $959.99

Bonus offer: after adding this item to cart, add 3 other eyepieces + the soft-sided case to get it for Free ($49.99 value)

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Explore Scientific 100° Series 2" 20mm Waterproof Eyepiece



  • 20mm Focal Length
  • 100° Field of View
  • 2" Diameter Barrel
  • Fully Multicoated Optics
  • Argon-Filled, Water and Fogproof
  • Slip-Resistant Textured Surface
  • Easy-Insertion Double-Tapered Barrel
  • Fold-Down Eyecup


Immerse Yourself in the Cosmos with Unparalleled View

The Explore Scientific 100° Series 2" 20mm Waterproof Eyepiece is your window to the universe, offering an expansive 100° field of view that transforms the way you observe the night sky. Designed for astronomers who seek depth, clarity, and immersion in their celestial explorations, this eyepiece combines state-of-the-art technology with unmatched comfort and quality.

  • Broad 20mm Focal Length: Delve deeper into space and uncover the intricate details of distant galaxies, nebulae, and star clusters with precision and ease.
  • Spectacular 100° Field of View: Experience a panoramic visual journey that not only captivates your vision but also relaxes your eye, allowing for extended observations without strain.
  • Superior Optics and Durability: Fully multi-coated lenses and edge-blackened optics provide exceptional contrast and resolution. The argon-filled, waterproof construction ensures protection against the elements and maximizes the longevity of the eyepiece.
  • Ergonomic Design for Every Astronomer: Features a slip-resistant textured surface, an easy-insertion double-tapered barrel, and a fold-down eyecup for enhanced usability and comfort.

Beyond the Ordinary Viewing Experience

Inspired by the precision of military optics, the Explore Scientific 100° Series Eyepiece not only broadens your view of the cosmos but does so with remarkable clarity and depth. Its ultra-wide angle design is perfect for both driven and non-driven telescopes, ensuring that celestial objects remain in your sight for longer durations.

Innovative Engineering for the Enthusiast

Internally sealed and purged with inert, dry argon gas, each eyepiece is meticulously crafted to prevent internal fogging, block the intrusion of particulates and fungus, and preserve the clarity of the internal coatings. Rigorous testing, including submersion in water for 30 minutes, guarantees the durability and quality of your astronomical companion.

Capture the Universe with Ease

The Explore Scientific 100° Series 20mm Eyepiece invites you to lose yourself in the night sky's magnificence. Whether you're tracking a comet's journey, exploring the rings of Saturn, or scanning the Milky Way, this eyepiece is your gateway to the wonders of the universe.

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Explore Scientific 100° Series 2" 20mm Waterproof Eyepiece | EPWP10020–01 | 812257010745

Explore Scientific 100° Series 2" 20mm Waterproof Eyepiece

$799.99 $959.99





Focal Length

20 mm

Focal Ratio


Field of View



Enhanced multi-layer deposition (EMD) coatings

Argon-purged, water and fog proof

14.5mm eye relief

34.8mm field stop diameter

Barrel Size



156mm length

70mm width


916 g
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