Buy one, get one 25% off - Alpen Optics

Explore Scientific  |  SKU: EPWP5265-01

Explore Scientific 52° Series 1.25" 6.5mm Waterproof Eyepiece

$119.99 $143.99

Bonus offer: after adding this item to cart, add 3 other eyepieces + the soft-sided case to get it for Free ($49.99 value)

Estimated delivery in 3-5 business days via UPS or FedEx

Earn 1 Point on this purchase. Learn more

Ships from US warehouse in 1-2 business days

Shipping & Returns

We offer free US standard shipping on orders over $99 and 30-day returns on most items. Some limitations apply.

Shipping Policy

30-Day Return Policy

Explore Scientific 52° Series 1.25" 6.5mm Waterproof Eyepiece



  • 6.5mm Focal Length
  • 52° Apparent Field of View
  • 1.25" Diameter Barrel
  • Fully EMD Multi-Coated Optics
  • Argon-Filled, Water and Fogproof
  • Slip-Resistant Textured Surface
  • Fold-Down Eyecup


Unlock the Universe’s Most Intricate Details

The Explore Scientific 52° Series 1.25" 6.5mm Waterproof Eyepiece is engineered for astronomers who desire to delve into the fine details of celestial objects. This mid-range, high-power eyepiece is your gateway to observing the cosmos with unprecedented clarity and sharpness, making every viewing session both challenging and rewarding.

  • Optimal 6.5mm Focal Length: Perfect for achieving high magnifications while maintaining excellent image quality, ideal for planetary observation, double stars, and compact deep-sky objects.
  • Wide 52° Apparent Field of View: Offers a generous viewing angle that enhances your ability to locate and track objects as they come into sharp focus.
  • Exceptional Optical Clarity: Fully EMD Multi-Coated Optics provide superior light transmission, resulting in bright, high-contrast images with reduced glare.
  • Designed for the Avid Observer: Argon-filled, waterproof, and fog-proof construction ensures lasting performance in any conditions. A slip-resistant textured surface and fold-down eyecup maximize comfort and usability.

Mastering High-Power Observations

Transitioning through magnifications to find the optimal view of an object is an art, and the 6.5mm eyepiece excels in this regard. The precise balance between power and clarity it offers is crucial for observing under varying conditions—from perfect atmospheric seeing to ensuring your telescope is fully acclimated and collimated.

A Portal to Unforgettable Views

Observing the night sky at high magnifications reveals a new level of detail that can be both challenging and immensely rewarding. Whether it’s the turbulent atmosphere of Jupiter or the crisp edges of the moon's craters, the 52° Series 6.5mm Eyepiece brings the universe into sharp focus, providing unforgettable views that are sharp and full of contrast.

Enhanced Observing with Averted Vision

This eyepiece not only excels in clarity and magnification but also supports the technique of averted vision, making it easier to observe faint celestial wonders. By allowing you to see objects with increased sensitivity to light, it unveils the faintest details of the night sky, enriching your astronomical experience.

Explore the Cosmos with Confidence

The Explore Scientific 52° Series 6.5mm Eyepiece represents the pinnacle of high-power astronomical viewing, offering a blend of quality, comfort, and value unmatched by comparably priced options. It’s an essential tool for anyone passionate about exploring the depths of space in detail.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Meta Pay
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa

Your payment information is processed securely encrypted during transmission. We do not store credit card details nor have access to your credit card information.

Questions & Answers

Have a Question?

Be the first to ask a question about this.

Ask a Question
Explore Scientific 52° Series 1.25" 6.5mm Waterproof Eyepiece | EPWP5265-01 | 811803030022

Explore Scientific 52° Series 1.25" 6.5mm Waterproof Eyepiece

$119.99 $143.99





Focal Length

6.5 mm

Focal Ratio


Field of View



Enhanced multi-layer deposition (EMD) coatings

Argon-purged, water and fog proof

15.9mm eye relief

5.9mm field stop diameter

Barrel Size



103.5mm length

43mm width


226.8 g | 8 oz
View product