• Explore Scientific 52° Argon-Purged 1.25-Inch Eyepiece Series — Fully Multi-Coated Eyepieces for Planetary Viewing
  • Explore Scientific 52° Argon-Purged 1.25-Inch Eyepiece Series — view 2
  • Explore Scientific 52° Argon-Purged 1.25-Inch Eyepiece Series — view 3
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Explore Scientific

Explore Scientific 52° Argon-Purged 1.25-Inch Eyepiece Series — Fully Multi-Coated Eyepieces for Planetary and General-Purpose Viewing

Explore Scientific 52° Argon-Purged 1.25-Inch Eyepiece Series — Fully Multi-Coated Eyepieces for Planetary and General-Purpose Viewing

$69.99
$119.99 $69.99
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The Explore Scientific 52° Argon-Purged Eyepiece Series is a versatile line of 1.25-inch telescope eyepieces built for planetary detail and everyday general-purpose viewing. The 52° apparent field of view gives a natural, comfortable window on the sky, and the wide range of focal lengths — from high-power 3mm to wide 40mm — lets you dial in the right magnification for almost any target.

Enhanced Multi-Layer Deposition (EMD) coatings on every surface maximize brightness, contrast, and color fidelity, while argon-purging and O-ring seals keep moisture and internal fogging out on damp nights.

Who it's for

Beginner and intermediate stargazers who want a dependable, well-priced eyepiece set for the Moon, planets, double stars, and brighter deep-sky objects. The consistent 52° field makes it easy to build out a matched set. New to eyepieces? See our guide on how to pick the proper telescope eyepiece.

Key features

  • 52° apparent field of view — a natural, immersive view across all focal lengths
  • EMD (Enhanced Multi-Layer Deposition) coatings for bright, high-contrast images
  • Argon-purged and O-ring sealed to prevent internal fogging and moisture
  • Parfocal series design — minimal refocusing when you swap eyepieces
  • Stainless steel barrel with safety undercut for secure mounting
  • Standard 1.25" barrel fits most telescopes and accepts 1.25" filters

Choosing your focal length

Short focal lengths (3–6.5mm) give high magnification for planets and the Moon; mid lengths (10–20mm) are the everyday workhorses; longer lengths (25–40mm) give low-power, wide views for star clusters and nebulae. A short, a medium, and a long eyepiece will cover most nights.

Specifications

Focal length Apparent field Eye relief (approx.) Barrel
3 mm 52° ~15 mm 1.25"
4.5 mm 52° ~15 mm 1.25"
6.5 mm 52° ~16 mm 1.25"
10 mm 52° ~16 mm 1.25"
15 mm 52° ~16 mm 1.25"
20 mm 52° ~15 mm 1.25"
25 mm 52° ~16 mm 1.25"
30 mm 52° ~19 mm 1.25"
40 mm 52° ~27 mm 1.25"

Eye relief values are approximate and vary by focal length. All models are argon-purged, waterproof, and fully multi-coated.

Frequently asked questions

Will these fit my telescope?
Yes, if your telescope or diagonal takes standard 1.25" eyepieces — the vast majority do. The barrels also accept 1.25" filters.

What's the difference between the 52° and 62° series?
The 62° series shows a slightly wider field of view; the 52° series is a more compact, value-focused option that excels at planetary and general viewing. Both use sealed, argon-purged, multi-coated optics.

What does "parfocal" mean?
Parfocal eyepieces stay close to focus when you swap between them, so you only need a small tweak instead of refocusing from scratch — handy when changing magnification on a target.

Which focal length should I start with?
A 15–20mm is the most versatile first choice. Add a 6.5mm or shorter for high-power planetary detail once you're comfortable.

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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.
Orders are usually processed within 1–2 business days, and standard delivery takes 4–8 business days after that. You'll receive a shipping confirmation email with your tracking number as soon as your order ships. Free standard shipping applies to the 48 contiguous US states. For full details, visit our Shipping Policy.
You have 30 days from delivery to request a return. Items must be unused, unassembled, and in their original packaging with all accessories. To start a return, email info@telescopewolves.com with your order number — returns sent without approval can't be accepted. For change-of-mind returns, you cover return shipping and a 5% restocking fee applies. Refunds go back to your original payment method. See our full Refund Policy for details.
Yes! If you find a lower advertised price on an identical, new, in-stock item from an authorized online retailer within one month of your purchase, we'll refund you the difference (item price plus shipping, excluding taxes). Just email info@telescopewolves.com with your order number and a link or screenshot of the lower price. 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 order as soon as it arrives. If anything is damaged, defective, or incorrect, email info@telescopewolves.com within 48 hours of delivery with your order number, a short description, and photos of the item, and we'll arrange a replacement or refund.
Absolutely. Our team is available Monday to Friday, 9am–5pm EST. The best way to reach us is by live chat or by email at info@telescopewolves.com. You can also visit our Contact Us Page.