Opticron 10×42 Aurora BGA VHD Binoculars

Description

Operating with a wide 348-foot field of view at 1000 yards and high-grade VHD optics, the Opticron 10×42 Aurora BGA VHD Binoculars provide sharp optical resolution and wide-angle situational awareness for demanding field ornithologists and backcountry naturalists. Pairing 10x magnification with 42mm objective apertures, this Japanese-manufactured roof prism optic yields an actual angle of view of 6.6 degrees, a 4.2mm exit pupil, and an accommodating 18mm eye relief for comfortable, strain-free viewing during all-day bird surveys and migratory hawk counts.

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 textured rubber armoring, the binocular measures 15.2 by 13.2 by 5.1cm (6 x 5.2 x 2 inches) and weighs 714g (25.2 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 a wide center 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 -3 to +3, 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 10×42 Aurora BGA VHD Binoculars

Designed for competitive birdwatchers and wildlife researchers, this 10×42 roof prism binocular combines VHD extra-low dispersion optics with field flattener lenses. Its Oasis dielectric prism coatings and S-H broadband multi-coatings deliver high light throughput and natural color balance across varied habitats. 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.

• 10x magnification power paired with 42mm objective lenses providing detailed subject resolution
• 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
• Linear field of view of 348 feet at 1000 yards (115.5m at 1000m) with 6.6-degree actual angle of view
• Generous 18mm 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 Architecture & Oasis-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.

Single-Hinge Magnesium Chassis & Wide-Wheel Center Focusing

The single-hinge magnesium alloy body provides structural rigidity while keeping total mass to 714g, creating a well-balanced optic that reduces forearm fatigue during hours of continuous field observation. Soft 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 18mm eye relief without peripheral light leakage

Opticron Premier Plus Limited Lifetime Warranty & Contents

The Opticron 10×42 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 10×42 Aurora BGA VHD binocular, soft Cordura carrying case with shoulder strap, padded neoprene neck strap, rubber objective lens covers, and protective eyepiece rainguard.