Skip to content

Explore Scientific 52° Series 30mm Waterproof Eyepiece

SKU EPWP5230-01
Original price $0.00 - Original price $0.00
Original price $0.00
$149.99 - $149.99
Current price $149.99
In stock

Ships To: United States & Canada 🇺🇸 🇨🇦

✓ Free U.S. Shipping (on most orders over $150 USD)

✓ Price Match Available

✓ Authorized Dealer

✓ Bulk Order Discounts Available

✓ Questions? Call Us 1-800-860-3429

Ships In: 1-3 Business Days

Estimated Delivery Time: 3-7 Business Days

Shipping & Returns

We offer free U.S. shipping to the lower 48 States - on most orders over $150 USD. Some limitations apply.

Shipping fees will apply on most orders shipping across Canada, with some exceptions.

We offer a 30 Day Return Policy on most of the products that we carry.

For full details on our Shipping & Returns Policy, please click here.


The vast majority of products that we sell, with a few exceptions, are covered under Warranty.

To view the Warranty details for each brand that we sell, including products that do not qualify for Warranty, please visit here.

Explore Scientific 52 Degree Series 30mm Waterproof Eyepiece - EPWP5230-01

Introducing the Explore Scientific 52° Series 30mm Waterproof Eyepiece, a cherished tool among deep sky observers.

Its 30mm focal length delivers a wide exit pupil, bathing your dilated eye in essential light for discerning faint galaxies and nebulae.

Low-power eyepieces hold significant importance for observers, offering a broad true field of view that simplifies object location and alignment.

Many expansive deep sky objects are best appreciated at the lowest magnifications attainable by your telescope and eyepiece combination.

Even in less-than-ideal seeing conditions, objects often retain their sharpness at lower powers.

The Explore Scientific 52° Series 30mm Eyepiece – a fusion of comfort, quality, and value.

This eyepiece boasts top-tier flat-field multi-element optics, poised to transform your visual astronomy endeavors.

With a generous apparent field of view extending to 52 degrees, these eyepieces offer unparalleled worth in a premium package.

Expect nothing short of extraordinary quality, ample eye relief, and exceptional value when compared to Plossls of similar price range.

Another notable advantage of these eyepieces lies in their exceptional contrast enhancement and the ease with which you can employ averted vision.

This technique proves especially valuable when observing faint celestial objects.

By utilizing averted vision, you direct the image to a more light-sensitive part of your eye, enabling the perception of even fainter details.



  • 52° Apparent Field of View: Immerse yourself in an expansive 52-degree apparent field of view, capturing a vast celestial vista with a single glance. This immersive vantage point elevates the observation of celestial objects, providing a comprehensive and visually stimulating experience.
  • 30mm Focal Length: Striking a harmonious balance between versatility and precision, the 30mm focal length offers an optimal level of magnification for a wide spectrum of astronomical observations. It provides a comfortable view of extended celestial objects such as star clusters and galaxies, while also revealing intricate details of planets and lunar features.
  • EMD (Enhanced Multi-Layer Deposition): Fortified with EMD coatings, embodying Enhanced Multi-Layer Deposition. This specialized coating process heightens 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 withstand the elements, this eyepiece features a robust waterproof design. It is fortified with O-ring seals, creating a secure, moisture-resistant barrier against water, dust, and debris. Moreover, it is infused with argon gas, further reinforcing 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 attests to 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, enhancing 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 adhere to stringent standards, with their optical surfaces meticulously polished to minimize aberrations and maximize light transmission.
  • Durable Construction: Engineered for resilience, this eyepiece embodies 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 allows for the customization of the viewing experience, enabling 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: Included in the Explore Scientific 52° Series 30mm Waterproof Eyepiece package are protective eyepiece caps, comfortable soft silicone rubber eyecups, a secure eyepiece pouch/case for storage, and a limited 1-year warranty for added peace of mind.


                                                                          Explore Scientific 52° Series Eyepieces Highlight Video:

                                                                          Explore Scientific Eyepiece Guide Video:


                                                                          What's Included:

                                                                          ✓ Explore Scientific 52° Series 30mm Waterproof Eyepiece

                                                                          ✓ Eyepiece Caps

                                                                          ✓ Soft Silicone Rubber Eyecups

                                                                          ✓ Eyepiece Pouch/Case

                                                                          ✓ Limited 1 year warranty



                                                                          Item Number  EPWP5230–01
                                                                          Focal Length  30mm
                                                                          Length  75.5mm
                                                                          Weight  47.8mm
                                                                          Weight  204.1 grams; 7.2 oz.
                                                                          Barrel Size/Type  1.25" O.D. / Double Taper
                                                                          Eye Relief  19.9mm
                                                                          Field Stop Diameter  27.2mm
                                                                          Coatings  EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
                                                                          Lens Elements/ Groups  4 Elements in 2 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

                                                                          Customer Reviews

                                                                          Be the first to write a review