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Explore Scientific  |  SKU: EPWP10055–01

Explore Scientific 100° Series 2" 5.5mm Waterproof Eyepiece

$549.99 $659.99

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" 5.5mm Waterproof Eyepiece



  • 5.5mm 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

Unlock Stellar Vistas with Ultra-Wide Precision

The Explore Scientific 100° Series 2" 5.5mm Waterproof Eyepiece stands as a testament to the fusion of expansive celestial views and meticulous detail. Designed for the astute astronomer, this eyepiece promises an unparalleled viewing experience, allowing you to explore the cosmos with clarity and comfort.

  • Precision 5.5mm Focal Length: Offers a magnified view of celestial wonders, bringing distant galaxies, nebulas, and star clusters into sharp, crisp focus.
  • Expansive 100° Field of View: Immerse yourself in the vastness of the night sky. This hyper-wide field of view not only makes celestial objects easier to locate but provides a breathtaking, panoramic experience.
  • Optimized for Excellence: Featuring fully multi-coated optics for enhanced contrast, and an argon-filled, waterproof design for durability. Experience the cosmos in unparalleled clarity, free from fog and water intrusion.
  • User-Centric Design: Equipped with a slip-resistant textured surface for a secure grip, an easy-insertion double-tapered barrel for hassle-free setup, and a fold-down eyecup for comfortable viewing.

Revolutionary Viewing Experience

The first time you peer through the Explore Scientific 100° Series Eyepiece, the boundary between you and the universe dissolves. Its vast field of view offers not just a window, but a doorway to the cosmos, allowing for extended observations without the need for frequent adjustments.

Enhanced Observational Flexibility

Benefit from the ease of averted vision technique; by observing slightly off-center, you tap into the heightened light sensitivity of your peripheral vision, revealing faint celestial objects with surprising clarity.

Built for the Elements

Each eyepiece undergoes rigorous testing, including submersion in 1 meter of water for 30 minutes, ensuring its resilience and reliability. The internal argon purging not only waterproofs but also prolongs the life of the optical coatings, ensuring that every view is as stunning as the first.

A Portal to the Cosmos

For those who seek both the thrill of discovery and the pleasure of long, detailed observation, the Explore Scientific 100° Series 5.5mm Eyepiece is an indispensable tool. It’s more than an eyepiece; it’s your personal gateway to the infinite wonders of the night sky.

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Explore Scientific 100° Series 2" 5.5mm Waterproof Eyepiece | EPWP10055–01 | 812257014934

Explore Scientific 100° Series 2" 5.5mm Waterproof Eyepiece

$549.99 $659.99





Focal Length

5.5 mm

Focal Ratio


Field of View



Enhanced multi-layer deposition (EMD) coatings

Argon-purged, water and fog proof

10.5mm eye relief

9.6mm field stop diameter

Barrel Size



150mm length

56mm width


612g | 21.6 oz
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