EXPLORE SCIENTIFIC 92-degree LER Eyepiece 17mm

🌌 Ultra-Premium Wide-Field Eyepiece for Deep Sky & Immersive Viewing

The Explore Scientific 92° 17mm Long Eye Relief (LER) Eyepiece is a flagship ultra-wide-angle telescope eyepiece, engineered for astronomers who demand maximum immersion, exceptional comfort, and world-class optical performance.

With a massive 92° apparent field of view, this eyepiece delivers a breathtaking “spacewalk” experience, allowing you to observe vast regions of the sky with incredible detail and minimal edge distortion. The 17mm focal length makes it a perfect mid-power eyepiece for deep-sky objects, galaxies, nebulae, and star clusters.

🔍 Key Features

🌠 92° Ultra-Wide Field – True Spacewalk Experience

• Massive 92° apparent field of view for immersive observation

• Observe larger sky areas compared to standard eyepieces

• Ideal for:

  • Nebulae & galaxies

  • Star clusters

  • Milky Way sweeping

🔬 Premium Optical Design for Superior Performance

• 17mm focal length – perfect balance of magnification and field

• Advanced multi-element optical system for excellent correction

• EMD fully multi-coated optics for maximum light transmission

• Edge-to-edge sharpness even in fast telescopes

👁️ Long Eye Relief – Maximum Comfort

• ~20mm long eye relief – ideal for eyeglass users

• Comfortable viewing during long observation sessions

• Full field visible without strain

🌟 Exceptional Contrast & Brightness

• High contrast views with reduced internal reflections

• Excellent for observing:

  • Deep sky objects (DSO)

  • Globular clusters

  • Planetary nebulae

  • Lunar surface details

🛡️ Argon Purged – Waterproof & Fogproof

• Argon-filled construction prevents internal fogging

• Fully waterproof and dustproof design

• Reliable performance in extreme environments

🔧 Professional Build & Compatibility

• 2-inch (50.8mm) barrel – compatible with most telescopes

• Foldable rubber eyecup for comfort

• Heavy-duty, premium construction for long-term use

📊 Technical Specifications

• Focal Length: 17mm

• Apparent Field of View: 92°

• Eye Relief: ~20mm

• Barrel Size: 2 inch (50.8mm)

• Optical Coating: Fully Multi-Coated (EMD)

• Waterproof: Yes (Argon purged)

• Weight: ~1kg (premium heavy-duty design)

📦 What’s in the Box

• Explore Scientific 92° 17mm Eyepiece

• Protective caps

• Storage case / pouch

🎯 Ideal For

• 🌌 Deep sky observation (nebulae, galaxies, clusters)

• 🔭 Wide-field immersive astronomy

• 🌙 Moon and planetary viewing

• 🔬 Dobsonian, SCT & refractor telescopes

• 🧑🚀 Intermediate to advanced astronomers

🚀 Why Buy from Modern Telescopes?

• 🇮🇳 India’s Largest Telescope & Astronomy Equipment Distributor

• ✅ 100% Genuine Explore Scientific Products

• 🚚 Fast Delivery Across India

• 🛠️ Expert Technical & Astronomy Support

• 🏆 Trusted by Observatories, Institutions & Enthusiasts

🔑 Important Note

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💡 Final Verdict

The Explore Scientific 92° 17mm LER Eyepiece is a top-tier premium eyepiece, offering an unmatched combination of ultra-wide field, superior comfort, and exceptional optical performance—perfect for astronomers seeking a truly immersive and professional-grade viewing experience.