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Explore Scientific  |  SKU: EPWP9217–01

Explore Scientific 92° Series 2" 17mm LER 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)

Estimated delivery in 3-5 business days via UPS or FedEx

Ships from US warehouse in 1-2 business days

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Explore Scientific 92° Series 2" 17mm LER Waterproof Eyepiece



  • 17mm Focal Length
  • 92° Field of View
  • 2" Diameter Barrel
  • Fully Multi-coated Optics
  • Argon-Purged, Water and Fogproof
  • Slip-Resistant Textured Surface
  • Fold-Down Eyecup


Discover the Universe: Explore Scientific 92° Series 2" 17mm LER Waterproof Eyepiece

Unparalleled Field of View: Step into the cosmos like never before with the Explore Scientific 92° Series 17mm Eyepiece, designed for the ultimate visual astronomy experience. Featuring a hyper-wide 92° apparent field of view, this eyepiece offers an expansive look at the night sky, making celestial objects easier to locate and observe for extended periods without the need for constant adjustments.

Exceptional Optical Performance: Dive deep into the stars with crystal-clear clarity thanks to fully multi-coated optics that enhance light transmission, contrast, and color fidelity. The 17mm focal length and 2" diameter barrel are optimized for wide-field viewing, ensuring you capture every cosmic detail.

Designed for Durability and Comfort: Venture into any environment with confidence, as the eyepiece is argon-purged, making it completely waterproof and fogproof. The slip-resistant textured surface ensures a secure grip, while the fold-down eyecup enhances comfort for both eyeglass wearers and non-wearers alike.

Innovative Viewing Techniques: Embrace the power of averted vision—a technique made effortless by the eyepiece's ultra-wide field. This approach allows you to perceive faint objects with greater clarity by utilizing the more light-sensitive parts of your eye, revealing the universe's hidden wonders.

Your Portal to the Cosmos: The Explore Scientific 92° Series eyepieces are not just tools but gateways to the stars. Their hyper-wide class design approaches the maximum for eyepiece field of view, making you feel as if you're directly touching the cosmos, without barriers between you and the vast universe.

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Explore Scientific 92° Series 2" 17mm LER Waterproof Eyepiece | EPWP9217–01 | 812257017379

Explore Scientific 92° Series 2" 17mm LER Waterproof Eyepiece

$799.99 $959.99





Focal Length

17 mm

Focal Ratio


Field of View



Enhanced multi-layer deposition (EMD) coatings

Argon-purged, water and fog proof

20.02mm eye relief

27.46mm field stop diameter

Barrel Size



152mm length

69.8mm width


2.87 lb
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