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Explore Scientific 82 Degree Series 18mm Argon-Purged Waterproof Eyepiece, Fully Multi-coated, 2" Barrel

SKU: ESWP8218 MFR: EPWP8218-01
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Key Features

  • Enjoy wide, immersive views with this 18mm telescope eyepiece, perfect for deep-sky observation.
  • Experience superior image quality with fully multi-coated lenses for stunning clarity and contrast.
  • The 82-degree apparent field of view delivers breathtaking panoramic vistas of celestial objects.
  • This 2" barrel eyepiece is argon-purged and waterproof, ensuring durability in any environment.
  • Achieve comfortable viewing with 13mm eye relief, ideal for extended stargazing sessions.
  • Enhance your telescope with this Explore Scientific eyepiece, featuring blackened lens edges.
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Shopper : Why Did You Choose This?BRIAN L : Quality for the price.

Reviews about this item

Review Summary

2018-02-07T11:45:45

Rated 5 out of 5

WOW - I made the right purchase

I'm new to astronomy and was buying last minute gear to observe the second supermoon we had at the end of Jan. Once all the required gear was in my shopping cart, I had a feeling that I should buy a low power 2" lens. It was either this OR a Tele Vue EN4170 17mm - now I can't speak for the Tele Vue as I didn't buy it, but I don't feel like I missed out not buying it. The lunar image was sharp and crisp all the way to the edges on my ED100 APO - if anything the moon was TOO bright and I wish I had a lunar filter. But even bright, there was no (apparent) loss of contrast or detail. I will be buying more eyepieces in this series!!!! I feel this was truly a great purchase, especially at that price point.

Trista F.

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Explore Scientific 82 Degree 18mm Argon-Purged Waterproof Eyepiece, 2" Barrel Specifications

  • Focal Length

    18mm

  • Barrel Size

    2" (50.8mm)

  • Apparent Field of View

    82deg.

  • Eye Relief (Designed)

    13mm

  • Filter Threads

    Standard 2" Filter Thread (M48 x 0.75)

  • Coatings

    EMD (Enhanced Multilayer Deposition) Coatings

  • Lens Elements

    6

  • Lens Groups

    4

  • Blackened Lens Edges

    Yes

  • Barrel Safety Recess

    Yes

  • Barrel Type

    Tapered barrel

  • Protective Plastic Storage Container

    Yes - Free Agena Eyepiece Container
    Size: Agena 65x80mm

  • Optical Design

    6 or 7 Elements; Combination of: Dense Crown, Light Crown, Dense Flint and Lanthanum Optical Glasses

  • End Caps

    2

  • Rubber Eye Guard

    Rubber Folding Type

  • Weight

    13.2oz / 374.21g

  • UPC Code

    812257014620

About Explore Scientific 82 Degree 18mm Argon-Purged Waterproof Eyepiece, 2" Barrel

FEATURED REVIEWS

WOW - I made the right purchase

By Trista F.

I'm new to astronomy and was buying last minute gear to observe the second supermoon we had at the end of Jan. Once all the required gear was in my shopping cart, I had a feeling that I should buy a low power 2" lens. It was either this OR a Tele Vue EN4170 17mm - now I can't speak for the Tele Vue as I didn't buy it, but I don't feel like I missed out not buying it. The lunar image was sharp and crisp all the way to the edges on my ED100 APO - if anything the moon was TOO bright and I wish...

View full Review

Are you an astronomy enthusiast seeking an immersive stargazing experience Discover the Explore Scientific 82 Degree Series 18mm Argon-Purged Waterproof Eyepiece, a product meticulously designed using advanced computer technology and a combination of low dispersion and high refractive index optical glasses. This eyepiece is fully multi-coated with durable multilayer deposition coatings, ensuring high contrast, high resolution, and superior flat field characteristics for your celestial observations.

Experience the full-immersion visual effect of this eyepiece, featuring long eye-relief and an expansive 82-degree apparent field. This design allows your eye to relax, making it easier to use the "averted vision" technique to study faint details across a vast field-of-view.

Constructed for durability, the eyepiece is assembled into precision machined metal lens barrels that maintain perfect alignment of the optical train, ensuring years of rugged use in the field. The eyepiece also features a twist-up rubber eye-guard that adjusts to the desired height for the observer's comfort. As seasoned astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope.

To enhance your viewing experience, all internal surfaces of the eyepiece barrel, as well as the edges of the lenses, are flat black. This design minimizes internal reflections and reduces the scattering of light within the lenses themselves.

Whether you're a novice stargazer or a seasoned astronomer, the Explore Scientific 82 Degree Series 18mm Argon-Purged Waterproof Eyepiece is an essential addition to your astronomy gear.

Explore Scientific 82 Degree 18mm Argon-Purged Waterproof Eyepiece, 2" Barrel Features

  • 18mm Focal Length
  • 2" Diameter Barrel
  • 82 Degree Apparent Angle of View
  • Long Eye Relief for Maximum Comfort
  • Blackened Interior & Lens Edges
  • Slip-Resistant Textured Surface
  • Parfocal with All Eyepieces in Series
  • EMD Fully Multi-Coated Optics
  • Argon Filled, Water and Fogproof
  • Fold-Down Eyecup

Key Features

  • Enjoy wide, immersive views with this 18mm telescope eyepiece, perfect for deep-sky observation.
  • Experience superior image quality with fully multi-coated lenses for stunning clarity and contrast.
  • The 82-degree apparent field of view delivers breathtaking panoramic vistas of celestial objects.
  • This 2" barrel eyepiece is argon-purged and waterproof, ensuring durability in any environment.
  • Achieve comfortable viewing with 13mm eye relief, ideal for extended stargazing sessions.
  • Enhance your telescope with this Explore Scientific eyepiece, featuring blackened lens edges.

What's in the box:

  • Explore Scientific 82 Degree 18mm Argon-Purged Waterproof Eyepiece
  • 2" Barrel
  • Explore Scientific 1 Year Warranty (Extendable to Lifetime Warranty with Registration)