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Explore Scientific 82° Series 8.5mm LER Waterproof Eyepiece

Original price $0.00 - Original price $0.00
Original price $0.00
$269.99 - $269.99
Current price $269.99
In stock

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Explore Scientific 82 Degree Series 8.5mm LER Waterproof Eyepiece - EPWP8285LE-01

Discover the Explore Scientific 82° Series 8.5mm LER Waterproof Eyepiece.

With an ample eye relief of 15mm, this ocular prioritizes a comfortable viewing experience, catering to all observers, including eyeglass wearers who benefit greatly from extended relief.

The 8.5mm focal length enables potent magnification, ideal for detailed observations of the Moon, planets, and binary stars.

Under near-ideal atmospheric conditions, it unveils intricate planetary features and facilitates thorough exploration of deep-sky object structures such as nebulae.

This multi-element eyepiece achieves superior light transmission through edge-blackened optics crafted from low-dispersion glass with a high refractive index.

Each lens is meticulously multi-coated with robust enhanced multi-layer deposition (EMD) coatings.

These elements synergize to unlock your telescope's full potential, delivering images of celestial marvels with acute contrast, high resolution, and crisp definition.

As with other eyepieces in the Explore Scientific 82° Series, this ocular offers an expansive 82° apparent field of view, immersing observers in the cosmic panorama and fostering a naturally relaxed viewing experience.

Explore Scientific 82° Series Waterproof Eyepiece

By unwinding your gaze and absorbing the presented tableau, sustained observations become more effortless, gradually revealing details initially concealed.

The wide field of view encourages the utilization of averted vision—a technique involving a slight deviation from direct focus on a target object.

This proves especially advantageous when observing faint celestial entities, as it directs the image onto a more light-sensitive region of the eye, thereby rendering fainter details visible.

All Explore Scientific Waterproof Eyepieces undergo meticulous gas-purging and O-ring sealing, establishing a waterproof enclave impervious to internal fogging and shielding against infiltrating contaminants like fungus and dust.

This meticulous design ensures that cleaning the eyepiece is a straightforward endeavor.



  • 82° Apparent Field of View: The eyepiece provides an exceptionally wide 82° apparent field of view, immersing observers in a vast expanse of the night sky. This expansive field of view offers a sweeping and immersive visual experience, enabling users to take in larger portions of the celestial landscape in a single frame.
  • 8.5mm Focal Length: With a focal length of 8.5mm, this eyepiece is optimized for high-magnification observations. It is particularly well-suited for scrutinizing celestial objects such as the Moon, planets, and binary stars. Under favorable atmospheric conditions, it reveals intricate details and structures with impressive clarity.
  • Long Eye Relief (LER) - 15mm: The eyepiece boasts an impressively long eye relief of 15mm, ensuring a comfortable viewing experience for all observers, including those who wear eyeglasses. This generous eye relief allows users to enjoy the full field of view without straining their eyes.
  • Argon-Purged Waterproof Design: Designed with an argon-purged, waterproof construction, this eyepiece offers exceptional durability and is suitable for a wide range of weather conditions. The argon gas filling prevents internal fogging and safeguards the optical elements from contaminants, ensuring consistent performance over time.
  • Low-Dispersion Glass with High Refractive Index: The eyepiece features optical elements crafted from low-dispersion glass with a high refractive index. This construction enhances light transmission and minimizes chromatic aberration, resulting in clear, high-contrast images with true color representation.
  • Enhanced Multi-Layer Deposition (EMD) Coatings: Each lens surface is fully multi-coated with durable EMD coatings. These coatings optimize light transmission, reduce reflections, and maximize contrast, delivering vivid and high-resolution images of celestial wonders.
  • Ultra-Wide Apparent Field Promotes Relaxation: The eyepiece features an ultra-wide 82° apparent field of view, immersing observers in the cosmos. This expansive field of view naturally promotes relaxation at the eyepiece, allowing for prolonged and comfortable observations.
  • Facilitates Averted Vision: The wide field of view encourages the use of averted vision, a technique where observers look slightly to the side of a target object rather than directly at it. This is particularly helpful for observing faint objects, as it directs the image onto a more light-sensitive part of the eye, revealing previously unseen details.
  • Gas-Purged and O-Ring Sealed: The eyepiece undergoes gas-purging and is O-ring sealed, creating a waterproof environment that is impervious to internal fogging and prevents contaminants from entering the eyepiece housing. This design makes cleaning and maintenance of the eyepiece effortless.
  • Included Accessories: The accessory ensemble accompanying the Explore Scientific 82° Series 8.5mm LER 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 Eyepiece Guide Video:


                                                              What's Included:

                                                              ✓ Explore Scientific 82° Series 8.5mm LER Waterproof Eyepiece

                                                              ✓ Eyepiece Caps

                                                              ✓ Soft Silicone Rubber Eyecups

                                                              ✓ Eyepiece Pouch/Case

                                                              ✓ Limited 1 year warranty



                                                              Item Number  EPWP8285LE-01
                                                              Focal Length  8.5mm
                                                              Length  106mm
                                                              Width  50mm
                                                              Weight  9.9oz; 280g
                                                              Barrel Size  1.25"
                                                              Eye Relief  16.3mm

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