Explore Scientific 82° Series 1.25" 4.5mm LER Waterproof Eyepiece

Explore Scientific 82° Series 1.25" 4.5mm LER Waterproof EyepieceThe 82 Series 4. 5mm LER delivers high magnification wide field views with Long Eye Relief a combination that is difficult to find at any price, let alone $139. With 82 of apparent field, you see nearly 60% more sky than a 52 eyepiece at the same magnification. Lanthanum glass optics, argon purged waterproof construction, and EMD coatings put this in direct competition with eyepieces costing three times as much. Key Features 82 apparent field of view

The 82° Series 4.5mm LER delivers high-magnification wide-field views with Long Eye Relief — a combination that is difficult to find at any price, let alone $139. With 82° of apparent field, you see nearly 60% more sky than a 52° eyepiece at the same magnification. Lanthanum glass optics, argon-purged waterproof construction, and EMD coatings put this in direct competition with eyepieces costing three times as much.

Key Features

• 82° apparent field of view — immersive, ultra-wide views that make planetary tracking effortless and deep-sky objects feel like you're floating through them
• Long Eye Relief (LER) design — comfortable viewing distance at high magnification, especially valuable for eyeglass wearers
• 7-element lanthanum glass optics — premium glass types deliver sharp, color-corrected images across the full wide field
• Argon-purged waterproof housing — sealed against moisture, fog, and humidity for all-weather reliability
• Enhanced Multi-Layer Deposition (EMD) coatings on all air-to-glass surfaces with edge-blackened elements
• Fold-down silicone rubber eyecup and 1.25" barrel for standard telescope compatibility

Ideal For

• Planetary observers who want the immersive "spacewalk" experience of an 82° field at high magnification
• Eyeglass wearers — the LER design maintains the full wide field without removing glasses
• Observers upgrading from Plössl or narrow-field eyepieces — the jump to 82° is transformative