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Explore Scientific 52° Series 3mm Waterproof Eyepiece

SKU EPWP5203-01
Original price $0.00 - Original price $0.00
Original price $0.00
$89.99 - $89.99
Current price $89.99
In stock

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Explore Scientific 52 Degree Series 3mm Waterproof Eyepiece - EPWP5203-01

Presenting the Explore Scientific 52° Series 3mm Waterproof Eyepiece, a valuable addition to our range of inert gas-purged waterproof eyepieces.

Specifically engineered for high-power, on-axis observations, this eyepiece is a perfect match for the "grab-and-go" ED80mm f/6 Air-Spaced Triplet telescope.

It offers a powerful 160X magnification, performing exceptionally well under favorable seeing conditions.

For the ED152 at f/8, this eyepiece achieves an impressive 405X magnification without the need for a Focal Extender or Barlow lens on nights of nearly perfect seeing.

The ES 52° Series 3mm Waterproof Eyepiece also provides a generous 15mm of eye relief, ensuring comfortable viewing sessions.

Crafted with precision, the Explore Scientific 3mm 52° Series Waterproof Eyepiece boasts full EMD (Enhanced Multi-Layer Deposition) Coating and edge-blackened lenses.

These features are meticulously designed to deliver the necessary contrast for serious high-power observations, making it an excellent choice for studying planets, closely paired double stars, and bright compact deep sky objects.

With an expansive apparent field of view of 52 degrees, these eyepieces offer remarkable value for their performance and quality.

Whether you're engaging in planetary observation or exploring celestial objects, the 3mm Waterproof Eyepiece promises an immersive and rewarding experience.



  • 52° Apparent Field of View: Immerse yourself in a sweeping 52-degree apparent field of view, capturing a vast celestial expanse in a single glance. This immersive vantage point elevates the observation of celestial objects, offering a comprehensive and visually stimulating experience.
  • 3mm Focal Length: Striking a harmonious balance between versatility and precision, the 3mm focal length provides an optimal level of magnification for a wide spectrum of astronomical observations. It grants a comfortable view of extended celestial objects like star clusters and galaxies, while also revealing intricate details of planets and lunar features.
  • EMD (Enhanced Multi-Layer Deposition): The Explore Scientific 52° Series Eyepiece is enhanced with EMD coatings, embodying Enhanced Multi-Layer Deposition. This specialized coating process enhances light transmission and minimizes internal reflections, resulting in images that are crisper, with heightened contrast and enhanced color accuracy.
  • Waterproof - O-Ring Sealed Argon Gas Purged: Engineered to brave the elements, this eyepiece features a robust waterproof design. It is fortified with O-ring seals, establishing a secure, moisture-resistant barrier against water, dust, and debris. Moreover, it is infused with argon gas, further strengthening its resistance to internal fogging and moisture-related damage.
  • Rigorous Water Testing: Subjected to meticulous evaluation for waterproof proficiency, this eyepiece endured a 30-minute submersion under one meter of water without any compromise in performance. This certification affirms its suitability for various weather conditions, including damp or rainy environments.
  • Removable Flip-Down Style Soft Silicone Rubber Eyecup: Equipped with a detachable flip-down style soft silicone rubber eyecup, this eyepiece ensures comfort and effectively shields against stray light, heightening the overall viewing experience. Additionally, its removable design allows for customization based on the observer's preferences.
  • Edge Blackened: Showcasing edge-blackened optics, this eyepiece undergoes a process that darkens the edges of the lens to reduce internal reflections and intensify contrast. This refinement minimizes stray light, resulting in superior image quality, especially in scenarios with pronounced contrasts between bright and dark areas.
  • High-Quality Optics: Meticulously crafted with precision, this eyepiece hosts top-tier optics engineered to deliver exceptional views of celestial objects. The lenses meet stringent standards, with their optical surfaces meticulously polished to minimize aberrations and maximize light transmission.
  • Durable Construction: Engineered for resilience, this eyepiece embodies a robust construction capable of withstanding the rigors of outdoor use. Its sturdiness ensures it can endure transportation, handling, and exposure to diverse environmental conditions, all without compromising its optical performance.
  • Threaded Barrels for Filters: Equipped with threaded barrels, this eyepiece empowers users to attach standard astronomical filters. This functionality enables the customization of the viewing experience, allowing for the enhancement of specific colors or the reduction of light pollution in accordance with the observer's preferences and target object.
  • Comfortable Eye Relief: Providing ample eye relief, this eyepiece facilitates extended periods of observation without inducing eye strain. This feature is particularly valuable for eyeglass wearers, ensuring they can maintain a full field of view without the need to remove their glasses.
  • Included Accessories: The accessory set accompanying the Explore Scientific 52° Series 3mm Waterproof Eyepiece includes protective eyepiece caps, comfortable soft silicone rubber eyecups, a secure eyepiece pouch/case for storage, and is complemented by a limited 1-year warranty, ensuring heightened peace of mind for users.


                                                                      Explore Scientific 52° Series Eyepieces Highlight Video:

                                                                      Explore Scientific Eyepiece Guide Video:


                                                                      What's Included:

                                                                      ✓ Explore Scientific 52° Series 3mm Waterproof Eyepiece

                                                                      ✓ Eyepiece Caps

                                                                      ✓ Soft Silicone Rubber Eyecups

                                                                      ✓ Eyepiece Pouch/Case

                                                                      ✓ Limited 1 year warranty



                                                                      Item Number  EPWP5203–01
                                                                      Focal Length  3mm
                                                                      Length  90.9mm
                                                                      Width  43mm
                                                                      Weight  204.1 grams; 7.2 oz.
                                                                      Barrel Size/Type  1.25" O.D. / Double Taper
                                                                      Eye Relief  15mm
                                                                      Field Stop Diameter  2.7mm
                                                                      Coatings  EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
                                                                      Lens Elements/ Groups  6 Elements in 3 Groups; Edge Blackened
                                                                      Filter Thread  Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
                                                                      Waterproof  O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
                                                                      Eyecup  Removable Flip-Down Style Soft Silicone Rubber
                                                                      Lens Caps  Slide-on Top and Bottom
                                                                      Materials  Optical Glass; Aluminum; Steel; Silicone Rubber
                                                                      Markings  Laser Engraved: Focal Length; Series; Serial Number; Brand

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