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Explore Scientific 100° Series 20mm Waterproof Eyepiece

SKU EPWP10020-01
Original price $0.00 - Original price $0.00
Original price $0.00
$799.99 - $799.99
Current price $799.99
In stock

Ships To: United States & Canada 🇺🇸 🇨🇦

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Explore Scientific 100 Degree Series 20mm Waterproof Eyepiece - EPWP10020-01

The Explore Scientific 100° Series 20mm Waterproof Eyepiece revolutionizes the world of visual astronomy, presenting a sweeping apparent field of view that immerses observers in a panoramic and captivating celestial experience.

Beyond its aesthetic appeal, this eyepiece is engineered to facilitate prolonged observation by alleviating eye strain, enabling astronomers to focus on intricate cosmic details for extended durations.

Originally designed for military applications, this ultra-wide angle eyepiece played a crucial role in precise target aiming.

Its long eye-relief design also proved instrumental in preventing eye injuries caused by recoil.

Each eyepiece undergoes a rigorous internal sealing and purging process with dry nitrogen gas.

This not only prevents internal fogging but also fortifies it against fine particulate intrusion and fungal growth, ensuring the longevity of internal coatings.

To validate its waterproof capabilities, every 100° Series eyepiece undergoes a 30-minute submersion in water at a depth of one meter.

Furthermore, the ES 100° Series 20mm Eyepiece boasts full multi-coating and edge-blackened optics, optimizing contrast and minimizing reflections.

This meticulous attention to detail guarantees unparalleled image clarity and brightness.

With these exceptional features, the Explore Scientific 100° Series 20mm Waterproof Eyepiece exemplifies the brand's unwavering commitment to providing astronomers with unmatched viewing experiences.

Whether you're a seasoned stargazer or an aspiring enthusiast, this eyepiece is poised to elevate your observations to new heights.



  • 100° Apparent Field of View: Immerse yourself in an extraordinary 100-degree apparent field of view, treating observers to a visual feast while promoting relaxed viewing. This feature enables astronomers to concentrate on subtle celestial details during extended, discomfort-free stargazing sessions.
  • 20mm Focal Length: The 20mm focal length strikes an ideal balance between magnification and field of view, offering versatile viewing for a wide array of celestial observations. Whether conducting detailed lunar and planetary studies or exploring deep-sky objects, this eyepiece excels.
  • Argon-Purged Waterproof Design: Internally sealed and purged with dry, inert argon gas, this eyepiece ensures impeccable waterproof performance. This innovative design shields against moisture and fogging, enhancing durability and preserving the longevity of internal coatings.
  • Rigorous Water Testing: Thoroughly tested by submerging in water up to one meter for 30 minutes, guaranteeing waterproof capabilities even in damp or humid observing environments.
  • Fully Multi-Coated Optics: Witness exceptionally clear, bright views with enhanced contrast, thanks to multiple layers of anti-reflective coatings that maximize light transmission while minimizing glare, reflections, and internal scattering.
  • Edge-Blackened Optics: Elevate image quality through edge-blackened optical elements, which reduce internal reflections and stray light. This leads to heightened contrast and improved image sharpness, ensuring celestial objects appear with exceptional clarity.
  • Precision-Machined Metal Construction: Meticulously crafted with precision-machined metal components, ensuring durability and longevity for years of stargazing adventures. The robust design maintains optical alignment for consistent performance.
  • Threaded Barrels: Accommodating filters, the threaded barrels enhance observations by adding various astronomy filters, allowing astronomers to customize their viewing experience for specific celestial targets and conditions.
  • Comfortable Eye Relief: Enjoy comfortable eye relief, especially beneficial for observers wearing eyeglasses. This feature allows for relaxed and immersive viewing without the need to remove eyeglasses.
  • Wide Compatibility: Compatible with various telescope types and mounts, making it a versatile addition to any astronomer's equipment arsenal. Whether you have a refractor, reflector, or catadioptric telescope, this eyepiece delivers remarkable views of the cosmos.
  • Included Accessories: The accessory ensemble accompanying the Explore Scientific 100° Series 20mm Waterproof Eyepiece includes protective eyepiece caps, comfortable soft silicone rubber eyecups, a secure eyepiece pouch/case for storage, and is complemented by a limited 1-year warranty, providing users with enhanced peace of mind.


                                                                            What's Included:

                                                                            ✓ Explore Scientific 100° Series 20mm Waterproof Eyepiece

                                                                            ✓ Eyepiece Caps

                                                                            ✓ Soft Silicone Rubber Eyecups

                                                                            ✓ Eyepiece Pouch/Case

                                                                            ✓ Limited 1 year warranty


                                                                            Item Number  EPWP10020–01
                                                                            Focal Length  20mm
                                                                            Length  156mm
                                                                            Width  70mm
                                                                            Weight  916g
                                                                            Barrel Size  2.00”
                                                                            Eye Relief  14.5mm
                                                                            Field Stop Diameter  34.8mm

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