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

Explore Deep-Sky Objects in One Field   Want to explore wide nebulae and clusters with ease? The 17mm 92° eyepiece gives you immersive views—without sacrificing edge sharpness or eye comfort. Features Ultra-Wide 92° Apparent Field of View – Soak in massive swaths of sky in a single view, ideal for sweeping across the Milky Way or framing large deep-sky objects. Generous 20mm Eye Relief – Long eye relief provides full-field comfort, even for glasses wearers observing over extended sessions. Argon-Purged Waterproof Housing – Sealed against fog, moisture, and internal condensation—ready for any environment or elevation. 2-Inch Barrel Compatibility – Fits all standard 2" focusers and diagonals with secure mechanical fit and optical precision. Precision Lens Coatings (EMD) – Enhanced multi-layer coatings boost light transmission and contrast for stunning clarity. Field Stop Diameter: 27.46mm – Delivers distortion-free, edge-to-edge sharpness even at ultra-wide angles. Durable