Opticron 8×42 Aurora BGA VHD Binoculars

Description

Track fast-moving woodland passerines across dense forest foliage using the Opticron 8×42 Aurora BGA VHD Binoculars wide-field roof prism observation system. Pairing an optimal 8x magnification with 42mm objective apertures, this Japanese-manufactured optic delivers an expansive 423-foot linear field of view at 1000 yards (140.4m at 1000m), an actual angle of view of 8.1 degrees, an accommodating 5.25mm exit pupil, and a generous 20mm eye relief for rapid target location and comfortable, fatigue-free scanning during extended ornithological surveys.

The optical system features the proprietary VHD optical layout incorporating extra-low dispersion (ED) glass elements and field-flattening technology, paired with phase-corrected Schmidt-Pechan roof prisms treated with Oasis 64-layer dielectric mirror coatings and S-H type multi-coating across all air-to-glass surfaces. Constructed around a compact magnesium alloy single-hinge chassis encased in soft-touch textured rubber armoring, the binocular measures 15.2 by 13.2 by 5.1cm (6 x 5.2 x 2 Inches) and weighs 726g (25.6 oz). The optical chambers are dry nitrogen gas filled and O-ring sealed for waterproof integrity down to a depth of 5m (16 feet). Mechanical controls center on an oversized central focus wheel with a 500-degree rotation travel, an agile 6.2-foot (1.9m) minimum close focus distance, a central diopter adjustment dial spanning -2.5 to +2.5, four-stage twist-up click-stop eyecups, an interpupillary range from 56mm to 75mm, and an integrated 1/4-20 tripod adapter socket.

Key Features of Opticron 8×42 Aurora BGA VHD Binoculars

Built for competitive birdwatchers and field naturalists, this 8×42 roof prism binocular combines VHD extra-low dispersion glass with field flattener lenses. Its wide 8.1-degree actual field of view delivers a large optical sweet spot with flat-field sharpness across the visual perimeter. The nitrogen-sealed magnesium chassis, 500-degree wide focus wheel, and four-stage eyecups provide dependable mechanical control and weather protection in severe outdoor environments.

• 8x magnification power paired with 42mm objective lenses delivering a bright 5.25mm exit pupil
• Phase-corrected Schmidt-Pechan roof prisms treated with Oasis 64-layer dielectric coatings
• VHD optical system incorporating extra-low dispersion (ED) glass and field flattener lenses
• Expansive 423-foot linear field of view at 1000 yards (140.4m at 1000m) with 8.1-degree actual angle
• Generous 20mm eye relief with four-stage twist-type retractable rubber eyecups for eyeglass wearers
• Smooth-action wide-wheel focusing with 500-degree travel and 6.2-foot (1.9m) close focus limit
• Nitrogen gas filled magnesium alloy chassis certified waterproof to an immersion depth of 5m
• Integrated central diopter adjuster and standard 1/4-20 threaded tripod adapter mounting socket

VHD Optical Layout & Oasis Dielectric-Coated Roof Prisms

The VHD optical system integrates high-grade extra-low dispersion ED glass with field-flattening technology to eliminate optical aberrations and field curvature, providing sharp resolution from the central axis to the extreme perimeter. Oasis 64-layer dielectric coatings applied to the Schmidt-Pechan prisms maximize light reflection efficiency, preserving authentic color neutrality on backlit subjects. S-H broadband multi-coatings minimize internal lens flare, allowing observers to resolve subtle feather textures and color gradations in shaded forest canopies.

Lightweight Magnesium Housing & Wide-Wheel Center Focus

The single-hinge magnesium alloy body provides structural rigidity while keeping total mass to 726g, creating a well-balanced optic that reduces forearm fatigue during hours of continuous field observation. Soft-touch textured rubber armoring cushions against accidental knocks and offers a secure hold in cold, wet conditions. The oversized center focus wheel features a wide rubber grip and smooth 500-degree rotation travel, allowing micro-fine focal adjustments from 6.2 feet out to optical infinity with or without gloves.

• Wide center focus wheel with 500-degree rotation travel and integrated central diopter adjuster
• Submersible nitrogen-purged magnesium alloy frame rated waterproof to a depth of 5m (16 feet)
• Four-position twist-up eyecups maintaining correct 20mm eye relief without peripheral light leakage

Opticron Premier Plus Limited Lifetime Warranty Protection

The Opticron 8×42 Aurora BGA VHD Binoculars are backed by the Opticron Premier Plus Limited Lifetime Warranty in North America upon online product registration, covering optical and mechanical components as well as outer protective armoring against defects and accidental damage. The complete factory package contains the Opticron 8×42 Aurora BGA VHD binocular, soft neoprene carrying case, neoprene neck strap, rubber objective lens covers, protective eyepiece rainguard, and microfiber cleaning cloth.