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Explore Scientific 100 Degree Series 20mm Argon-Purged Waterproof Eyepiece

SKU: ESEPWP100201 MFR: EPWP10020-01
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Key Features

  • Experience stunning views with this 20mm Explore Scientific eyepiece, perfect for stargazing.
  • Enjoy a super-wide 100-degree apparent field of view, making celestial navigation a breeze.
  • With 14.5mm eye relief, this telescope eyepiece offers comfortable viewing, even with glasses.
  • Argon-purged and waterproof, this eyepiece ensures clear views in any weather condition.
  • Enhanced Multilayer Deposition coatings deliver exceptional image clarity and brightness.
  • The robust build quality of this Explore Scientific eyepiece guarantees years of reliable use.
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Special Order?Estimated to Ship: 10/23/2025
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TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

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Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.

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Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

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Explore Scientific Eyepiece Specifications

  • Focal Length

    20mm

  • Barrel Size

    2" (50.8mm)

  • Apparent Field of View

    100deg.

  • Eye Relief

    14.5mm

  • Field Stop Diameter

    34.8mm (1.37")

  • Coatings

    EMD (Enhanced Multilayer Deposition) Coatings

  • Length (L x W)

    6.14 x 2.75" (156 x 70mm)

  • Weight

    2.0 lbs (916g)

About Explore Scientific Eyepiece

A revolutionary addition to your stargazing equipment, the 100 Degree Series 20mm Argon-Purged Waterproof Eyepiece offers an expansive, panoramic viewing experience that not only captivates the observer but also allows for detailed observation over extended periods. This high-quality eyepiece, originally designed for military use, features an ultra-wide angle lens that was critical for precise target aiming, while its long eye-relief design minimized the risk of eye injury from recoil.

Each eyepiece in the 100 Degree Series is meticulously sealed and purged with dry, inert nitrogen gas. This innovative argon-purging process effectively prevents internal fogging, wards off the intrusion of fine particulates and fungus, and optimizes the longevity of the internal coatings. This ensures a clear, unobstructed view of celestial bodies, making it an essential tool for astronomy enthusiasts.

To guarantee its durability and versatility, every 100 Degree Series 20mm eyepiece undergoes rigorous testing, including submersion in 1 meter of water for 30 minutes. This waterproof feature makes it an ideal choice for outdoor use in various weather conditions.

Moreover, all 100 Degree Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast, enhancing your viewing experience by delivering crisp, clear images of the night sky. Compact yet robust, this eyepiece is a testament to the blend of innovative design and high-quality craftsmanship.

Explore Scientific Eyepiece Features

  • Huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods.
  • Each 100 Degree Series Argon-Purged Waterproof eyepiece is internally sealed and purged with inert, dry argon gas.
  • This also maximizes the life of the internal coatings.
  • Every 100 Degree eyepiece is tested by submerging them down to 1 meter of water for 30 minutes.
  • All 100 Degree Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast.

Key Features

  • Experience stunning views with this 20mm Explore Scientific eyepiece, perfect for stargazing.
  • Enjoy a super-wide 100-degree apparent field of view, making celestial navigation a breeze.
  • With 14.5mm eye relief, this telescope eyepiece offers comfortable viewing, even with glasses.
  • Argon-purged and waterproof, this eyepiece ensures clear views in any weather condition.
  • Enhanced Multilayer Deposition coatings deliver exceptional image clarity and brightness.
  • The robust build quality of this Explore Scientific eyepiece guarantees years of reliable use.

What's in the box:

  • Explore Scientific 100 Degree Series 20mm Argon-Purged Waterproof Eyepiece
  • Explore Scientific 1 Year Limited Warranty (Lifetime Limited Warranty with Registration)