• Explore Scientific 68° Argon-Purged Eyepiece Series — 1.25-Inch Waterproof Eyepieces for Wide-Field Viewing
  • Explore Scientific 68° Argon-Purged Eyepiece Series — view 2
1 2

Explore Scientific

Explore Scientific 68° Argon-Purged Eyepiece Series — 1.25-Inch Waterproof Eyepieces for Wide-Field Viewing

Explore Scientific 68° Argon-Purged Eyepiece Series — 1.25-Inch Waterproof Eyepieces for Wide-Field Viewing

$109.99
$119.99 $109.99
Sale Sold out
Shipping calculated at checkout.
Product options

The Explore Scientific 68° Argon-Purged Eyepiece Series is a line of durable, wide-field telescope eyepieces built for immersive views and long-term reliability. The 68° apparent field of view gives an expansive window on the sky — great for scanning star clusters, nebulae, and the lunar surface — and the fully multi-coated optics deliver bright, high-contrast images.

Every eyepiece is argon-purged, sealed, and waterproof, so it resists internal fogging, dust, and moisture even on damp observing nights.

Who it's for

Beginner and advanced stargazers who want a wider, more immersive field than a standard eyepiece, with rugged waterproof build quality. New to eyepieces? See our guide on how to pick the proper telescope eyepiece.

Key features

  • 68° apparent field of view for immersive wide-angle observing
  • Fully multi-coated optics for bright, high-contrast images
  • Argon-purged and waterproof — resists fogging, dust, and moisture
  • Comfortable eye relief for extended observing sessions
  • 1.25" barrels (16–24mm) and 2" barrels (28–40mm), threaded for filters

Choosing your focal length

Shorter focal lengths (16–24mm) give more magnification for detail; longer lengths (28–40mm) give lower power and a wider view for large deep-sky objects and star fields. The 16–24mm use a 1.25" barrel; the 28mm, 34mm, and 40mm use a 2" barrel.

Specifications

Focal length Apparent field Barrel
16 mm 68° 1.25"
20 mm 68° 1.25"
24 mm 68° 1.25"
28 mm 68° 2"
34 mm 68° 2"
40 mm 68° 2"

All models feature a 68° apparent field, fully multi-coated optics, and argon-purged waterproof construction.

Frequently asked questions

What barrel size do these use?
The 16mm, 20mm, and 24mm use a 1.25" barrel; the 28mm, 34mm, and 40mm use a 2" barrel, so make sure your focuser or diagonal accepts the right size.

How does the 68° compare to the 62° series?
The 68° gives a slightly wider, more immersive field; both use sealed, argon-purged, fully multi-coated optics. The 68° is a nice step up in field of view.

Which focal length should I start with?
A 16–24mm is a versatile first choice for general viewing; add a longer 2" model for wide, low-power deep-sky sweeps.

View full details

Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
Most orders ship within 5 business days. You'll receive tracking information within 24 hours of your order leaving the warehouse. For full details, visit our Shipping Policy.
Orders cancelled after 48 hours are subject to a $20 administration fee. If your order has shipped, you are responsible for return shipping costs. Refunds are issued to the original payment method. See our full Refund Policy for details.
Yes! If you find a lower price at another authorized online retailer within 6 months of your purchase, we'll refund the difference. Learn more on our Price Match Guarantee page.
All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
Please inspect your package on arrival and note any damage when signing for delivery. Send photos to info@telescopewolves.com and we'll process a claim on your behalf.
Absolutely. Our team is available Monday to Friday, 9am–5pm EST. The best way to reach us is by live chat (in the bottom right hand corner) or by email at info@telescopewolves.com. You can also visit our Contact Us Page.