1 2

Explore Scientific

Explore Scientific 52° Argon‑Purged 1.25" Eyepiece Series – Multiple Focal Lengths (3 mm, 4.5 mm, 6.5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 40 mm)

Explore Scientific 52° Argon‑Purged 1.25" Eyepiece Series – Multiple Focal Lengths (3 mm, 4.5 mm, 6.5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 40 mm)

$119.99
$119.99 $119.99
Sale Sold out
Shipping calculated at checkout.
Size

Enhance your telescope’s performance with the Explore Scientific 52° Argon-Purged 1.25" Eyepiece Series, a versatile set of high-quality eyepieces designed for immersive visual astronomy. This series features a consistent 52° apparent field of view across all focal lengths — from high-power 3 mm options for planetary detail to 40 mm eyepieces for expansive deep-sky vistas — giving you flexible magnification options for a wide range of celestial targets.

Each eyepiece is argon-purged and O-ring sealed to prevent internal fogging, moisture, and contaminants, ensuring long-lasting optical clarity even in changing temperatures and humid conditions. Enhanced Multi-Layer Deposition (EMD) coatings on all optical surfaces maximize brightness and contrast, providing crisp detail and a rich visual experience whether you’re studying the Moon’s surface, splitting double stars, or scanning galaxies and nebulae.

Available focal lengths in this series include 3 mm, 4.5 mm, 6.5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, and 40 mm, making this series ideal for building a complete eyepiece set or selecting the perfect magnification for your telescope’s focal length and observing goals.

Key Features

  • Argon-purged optical system prevents internal fogging and moisture penetration for long-lasting performance and easy maintenance.

  • 52° apparent field of view offers a natural-looking, immersive viewing experience across all focal lengths.

  • Enhanced Multi-Layer Deposition (EMD) coatings maximize brightness, contrast, and color fidelity.

  • O-ring sealed and waterproof design for rugged use and resistance to contaminants.

  • Stainless steel barrel with security cutoff for reliable mounting in standard 1.25" focusers.

  • Dust caps and protective pouch included for safe storage and transport.

  • Parfocal series design allows easy focus adjustment when switching between eyepieces.

Specifications (By Focal Length)

Focal Length Barrel Field of View Eye Relief Field Stop (Approx) Notes
3 mm 1.25" 52° ~15 mm ~2.7 mm High magnification
4.5 mm 1.25" 52° ~15 mm ~4.1 mm High-power planetary/close detail
6.5 mm 1.25" 52° ~16 mm ~5.9 mm Mid-high power
10 mm 1.25" 52° ~16 mm ~9.1 mm Balanced power
15 mm 1.25" 52° ~16 mm ~13.6 mm General observing
20 mm 1.25" 52° ~15 mm ~18.2 mm Lower power
25 mm 1.25" 52° ~16 mm ~22.7 mm Wide deep-sky views
30 mm 1.25" 52° ~19 mm ~27.2 mm Expansive low-power
40 mm 1.25" 52° ~27 mm ~36 mm Ultra-wide field

Video

 

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.