The Explore Scientific 4.5mm 82° Series Long Eye Relief Eyepiece delivers ultra-high magnification with exceptional eye comfort, making it a superb choice for detailed planetary and lunar observation. With a generous 15.9mm of eye relief, this eyepiece is particularly well-suited for eyeglass wearers, providing full-field views without discomfort.
Engineered for sharp, high-resolution viewing, this 4.5mm focal length is perfect for observing Saturn’s ring structure, Jupiter’s cloud belts, tight double stars, and small-scale features on the Moon. The 82° ultra-wide apparent field offers a panoramic experience that enhances immersion and makes it easier to track objects—even in non-motorized mounts.
Its low-dispersion, high-index optical glass is treated with fully multi-coated EMD layers and edge-blackened optics, optimizing contrast, clarity, and light transmission. The argon-purged, O-ring sealed construction protects internal components from fog, moisture, and dust, making this eyepiece durable in all observing conditions.
CA Residents: Prop 65 WARNING(S)
🌟 Features & Benefits
- 4.5mm focal length delivers high-power magnification for lunar and planetary detail
- 82° apparent field of view creates a wide, immersive visual experience
- 15.9mm eye relief offers excellent comfort for eyeglass wearers
- Low-dispersion, high-index glass provides sharp, true-color images
- Fully EMD multi-coated and edge-blackened optics for maximum contrast and minimal glare
- Waterproof and fog-resistant with argon-purged, O-ring sealed housing
- Excellent for viewing planets, double stars, and compact deep sky objects
🎯 Who It’s For
- Astronomers needing high magnification for planetary and lunar detail
- Eyeglass wearers who demand long eye relief without sacrificing performance
- Observers using manual or tracking telescopes who want a wide field for easier target acquisition
🔭 What You’ll Be Able to See
- High-definition views of Saturn’s rings, Jupiter’s bands, and Martian surface markings
- Sharp lunar features like rilles, crater rays, and mountain peaks
- Tight double stars and small bright nebulae
🎒 What’s Included
- Explore Scientific 4.5mm 82° Long Eye Relief Waterproof Eyepiece
- Protective end caps
- Soft storage pouch
Specs
| Item Number | EPWP8245LE-01 |
| Focal Length | 4.5mm |
| Apparent Field | 82° |
| Eye Relief | 15.9mm |
| Barrel Size | 1.25" |
| Length | 106mm |
| Width | 50mm |
| Weight | 9.7 oz / 275g |
| 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