The Explore Scientific 8.5mm 82° Series Long Eye Relief Eyepiece combines powerful high magnification with a comfortable 15mm eye relief, making it a top choice for eyeglass wearers and observers who value extended viewing sessions. Whether you're examining Saturn’s rings, Jupiter’s atmospheric bands, or faint deep-sky objects, this eyepiece delivers exceptional clarity and sharpness under steady skies.
Its 82° ultra-wide apparent field immerses you in the night sky and naturally supports averted vision, a technique that enhances the visibility of faint details by engaging the more light-sensitive areas of your eye. This is especially helpful when observing planetary nebulae, globular clusters, or double stars.
The optics are made from low-dispersion, high-index glass and treated with enhanced multi-layer deposition (EMD) coatings to ensure maximum light transmission and contrast. All lens elements are edge-blackened to suppress internal reflections and stray light. Housed in a waterproof, argon-purged, and O-ring sealed barrel, this eyepiece is built to withstand dew, moisture, and environmental contaminants—making it ideal for both field and observatory use.
CA Residents: Prop 65 WARNING(S)
🌟 Features & Benefits
- 8.5mm focal length for crisp, high-magnification views of planets, the Moon, and tight deep-sky targets
- 82° apparent field of view for a wide, immersive observing experience
- 15mm long eye relief provides comfort, especially for eyeglass wearers
- EMD-coated, edge-blackened optics for bright, high-contrast images
- Argon-purged, waterproof housing resists fogging, moisture, and dust
- Ideal for planetary detail, double stars, and bright nebulae
- Precision-machined construction ensures optical alignment and durability
🎯 Who It’s For
- Eyeglass wearers seeking high-magnification comfort
- Astronomers observing planetary, lunar, and compact deep-sky objects
- Telescopes users who prefer wide, immersive fields of view
🔭 What You’ll Be Able to See
- Planetary details such as Jupiter’s cloud belts, Saturn’s Cassini Division, and Mars' surface contrast
- Sharp lunar craters and mountain ranges
- Bright planetary nebulae, globular clusters, and tight double stars
🎒 What’s Included
- Explore Scientific 8.5mm 82° Long Eye Relief Waterproof Eyepiece
- Protective dust caps
- Soft carrying pouch
Specifications
| Item Number | EPWP8285LE-01 |
| Focal Length | 8.5mm |
| Apparent Field | 82° |
| Eye Relief | 15mm |
| Barrel Size | 1.25" |
| Length | 106mm |
| Width | 50mm |
| Weight | 9.9 oz / 280g |
| Waterproofing | Argon Purged / O-Ring Sealed |
| Eyecup | Removable Flip-Down Silicone Rubber |
Warranty Information:
This product includes a Limited One-Year USA Warranty, which converts to the Explore STAR Transferable Extended Life of the Product Warranty when registered within 60 days of purchase.
To activate your warranty, register your product at:
www.explorescientific.com/pages/product-registration