1 1

Explore Scientific

Explore Scientific 72° ED Series 11.5mm Waterproof Eyepiece [EPWP72115ED-01]

Explore Scientific 72° ED Series 11.5mm Waterproof Eyepiece [EPWP72115ED-01]

$299.99
$299.99
Sale Sold out
Shipping calculated at checkout.

Premium ED glass. Wide 72° field. Perfect for deep-sky exploration.

The Explore Scientific 72° ED Series 11.5mm Waterproof Eyepiece is the lowest-power, widest-field option in the 72° ED lineup — ideal for sweeping deep-sky targets, open clusters, and rich star fields while still delivering the sharp, color-accurate views that HOYA FCD1 extra-low dispersion glass makes possible. A versatile all-night eyepiece that works beautifully across a wide range of telescopes.

Why the 72° ED Series Stands Out

  • HOYA FCD1 ED glass virtually eliminates chromatic aberration for razor-sharp, color-true views
  • Wide 72° apparent field of view delivers an immersive, stadium-like observing experience
  • Long eye relief makes it comfortable for extended sessions — including for eyeglass wearers
  • EMD multi-layer coatings on all surfaces maximize contrast and light transmission
  • Edge-blackened optics minimize internal reflections and scatter for a clean, dark background

Waterproof & Built to Last

  • Argon-purged and O-ring sealed — impervious to internal fogging and moisture
  • Argon's larger atomic size means a more stable internal environment than nitrogen-purged designs
  • Anodized aluminum housing stands up to years of use in any weather conditions
  • Easy to clean interior and exterior thanks to the sealed design

Best Used For

  • Wide-field deep-sky viewing — open clusters, nebulae, and star fields
  • Low-to-mid power planetary and lunar observation
  • A natural complement to the 6.5mm and 8.5mm in the 72° ED lineup
  • Upgrading from a stock eyepiece on any Sidara, FirstLight, or ES refractor or reflector

SPECS

Specification Details
SKU EPWP72115ED-01
Apparent Field of View 72°
Focal Length 11.5mm
Barrel Size 1.25"
Glass Type HOYA FCD1 Extra-Low Dispersion (ED)
Coatings EMD multi-layer on all air-to-glass surfaces
Waterproof Yes — argon-purged, O-ring sealed
Eye Relief Long eye relief
Eyecup Foldable rubber
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.