17% Off

Explore Scientific 68 Degree Series 28mm Argon-Purged Waterproof Eyepiece, 2" Barrel

SKU: ESEPWP682801 MFR: EPWP6828-01
Earn VIP Reward Points

Key Features

  • Enjoy a wide 68-degree field of view with this 28mm Explore Scientific eyepiece for immersive stargazing.
  • Experience comfortable viewing sessions with the generous 21.6mm eye relief offered by this telescope eyepiece.
  • The 2" barrel size of this argon-purged eyepiece ensures compatibility with many telescope focusers.
  • Waterproof construction keeps this 28mm eyepiece safe from moisture, ensuring clear views in any condition.
  • Optimize light transmission and image quality with advanced lens coatings on this Explore Scientific eyepiece.
  • Achieve sharp, high-contrast views of celestial objects with this premium 68-degree telescope eyepiece.
See More Product Details
Special Order?Estimated to Ship: 08/12/2025
Free Shipping

See Options

Qty
1

Protect your gear with Adorama Protect.* Learn more

1 Year

$26.99

2 Year

$42.99

3 Year

$54.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Shopper : Why Did You Choose This?BENJAMIN LETHCO S : Looking to add a couple 2in eyepieces to my current inventory

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

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

Repair or Replacement

Repair or Replacement

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

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Explore Scientific 68 Degree 28mm Argon-Purged Waterproof Eyepiece, 2" Barrel Specifications

  • Eyepiece Apparent FOV

    68Deg.

  • Eyepiece Barrel Size

    2" / 5.08cm

  • Eyepiece Eye Relief

    21.6mm

  • Field stop Dia.

    31.8mm

  • Eyepiece Focal Length

    28mm

  • Dimensions (L x W)

    91.4 x 61.3mm / 3.6 x 2.41"

  • Weight

    16.1oz / 456g

  • UPC Code

    812257010516

About Explore Scientific 68 Degree 28mm Argon-Purged Waterproof Eyepiece, 2" Barrel

Overcome the limitations of traditional eyepieces with the Explore Scientific 68 Degree Series 28mm Argon-Purged Waterproof Eyepiece. This high-quality, durable eyepiece is innovatively designed for those who require longer eye relief, yet still desire a wider field of view than what's offered by classic Plossl or Orthoscopic style eyepieces.

Ideal for both eyeglass wearers and non-wearers, this versatile eyepiece features an extra-long eye relief, allowing for comfortable observation even with eyeglasses on. Its 68-degree wide-angle view enhances your astronomical observation experience, providing a broader field of view and superior visibility of distant celestial objects.

Constructed with a reliable 2-inch barrel and a 28mm focal length, this eyepiece is compatible with a wide range of telescope configurations. Its argon-purged design ensures prevention of internal fogging, enhancing the clarity of your celestial observations.

Moreover, the eyepiece is waterproof, making it suitable for use in wet or humid environments, and extending its durability. The enhanced EMD coatings on this eyepiece not only improve contrast but also contribute to sharper, clearer images of the night sky.

From its rubber grip to its folding eyecup, every detail of this eyepiece is designed for your comfort and convenience. Whether you're an amateur astronomer or an avid stargazer, the Explore Scientific 68 Degree Series 28mm Argon-Purged Waterproof Eyepiece is designed to elevate your night sky exploration and help you observe the faintest objects that your telescope is capable of.

Explore Scientific 68 Degree 28mm Argon-Purged Waterproof Eyepiece, 2" Barrel Features

  • Optimized Optical Design: Explore 68 Degree Series 28mm Eyepiece is optimized through each design, fabrication and testing process to produce high contrast, high resolution image
  • Durable Coatings and Finishing Touch: Each element in your Explore Scientific 68 Degree Series 28mm eyepiece is fully multi-coated, resulting in bright, sharp images and every element has blackened edges to reduce internal reflections and increase contrast
  • Waterproof, Fog Proof Housing: The internal optics of 68 Degree Series 28mm eyepiece is housed in a gas purged, waterproof barrel that keeps them as pristine as the day they were manufactured
  • Tapered Barrel for Extra Security: The insert barrel of 28mm eyepiece is double tapered to allow smooth insertion, the wide dimension of the taper helps prevent the eyepiece from falling out of the telescope should the set screw holding it in place become loose

Key Features

  • Enjoy a wide 68-degree field of view with this 28mm Explore Scientific eyepiece for immersive stargazing.
  • Experience comfortable viewing sessions with the generous 21.6mm eye relief offered by this telescope eyepiece.
  • The 2" barrel size of this argon-purged eyepiece ensures compatibility with many telescope focusers.
  • Waterproof construction keeps this 28mm eyepiece safe from moisture, ensuring clear views in any condition.
  • Optimize light transmission and image quality with advanced lens coatings on this Explore Scientific eyepiece.
  • Achieve sharp, high-contrast views of celestial objects with this premium 68-degree telescope eyepiece.

What's in the box:

  • Explore Scientific 68 Degree 28mm Argon-Purged Waterproof Eyepiece
  • 2" Barrel
  • Explore Scientific 1 Year Warranty (Extendable to Lifetime Warranty with Registration)