Celestron TrailSeeker ED 10x42
Model 71407
The Celestron TrailSeeker ED 10×42 is designed for birdwatching, wildlife observation, hiking, and outdoor exploration. Its 10x magnification brings distant subjects into closer view, while the 42mm objective lenses gather light for detailed observation in varied outdoor conditions. Extra-low dispersion (ED) glass helps reduce chromatic aberration, while fully multi-coated optics and advanced prism coatings support bright, high-contrast images. Its waterproof construction and durable design make it a versatile option for nature enthusiasts seeking detailed views in the field.
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Key Features
Discover the key features of the Celestron TrailSeeker ED 10×42, from its extra-low dispersion glass and optical coatings to its field of view, eye relief, and weather-resistant construction.
10x
Magnification
42 mm
Objective Lens
ED Glass
Extra-Low Dispersion Optics
Waterproof
Weather-Resistant Construction
15 mm
Eye Relief
340 ft
Field of View at 1,000 yd
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Quick Specifications
| Specification | Details |
|---|---|
| Magnification | 10× |
| Objective Lens Diameter | 42 mm |
| Prism Type | Roof prism, BaK-4 glass |
| Field of View at 1,000 yd | 340 ft (103 m at 1,000 m) |
| Exit Pupil | 4.27 mm |
| Eye Relief | 15 mm |
| Close Focus Distance | 8.2 ft (2.5 m) |
| Weight | 666 g (23.5 oz) |
| Weather Protection | Waterproof and nitrogen-filled, according to manufacturer product information |
About This Model
The Celestron TrailSeeker ED 10×42 is a full-size roof-prism binocular designed for birdwatching, wildlife observation, hiking, and general outdoor use. Its 10x magnification helps reveal details on distant subjects, while the 42mm objective lenses gather light for viewing in varied outdoor conditions. The 6.5° angular field of view provides a practical balance between magnification and the ability to follow moving wildlife.
The optical system combines extra-low dispersion (ED) glass with fully multi-coated optical surfaces to help reduce chromatic aberration and improve light transmission. BaK-4 roof prisms use phase-correction and dielectric coatings to support contrast, color fidelity, and image detail. The binocular provides a 4.27mm exit pupil, 15mm of eye relief, and a close-focus distance of approximately 8.2 feet, making it useful for observing both distant wildlife and nearby natural subjects.
Built for outdoor observation, the TrailSeeker ED features a magnesium-alloy body with rubber armoring, waterproof construction, and nitrogen filling to help prevent internal fogging. It weighs approximately 666 grams and can be mounted on a compatible tripod using a separately sold adapter. These features make it a versatile option for users who want 10x magnification, enhanced optical performance, and durable construction for regular outdoor use.
Full Specifications
Explore the full specifications of the Celestron TrailSeeker ED 10×42 binoculars, including optical performance, lens coatings, field of view, focusing capabilities, dimensions, and weather protection.
| Specification | Details |
|---|---|
| Model | Celestron TrailSeeker ED 10x42 |
| Model Number | 71407 |
| Magnification | 10x |
| Objective Lens Diameter | 42 mm (1.65 in) |
| Prism Type | Roof prism |
| Prism Glass | BaK-4 |
| Angular Field of View | 6.5° |
| Field of View at 1,000 yd | 340 ft |
| Field of View at 1,000 m | 103 m |
| Exit Pupil | 4.27 mm |
| Eye Relief | 15 mm (0.59 in) |
| Close Focus Distance | 8.2 ft (2.5 m) |
| Interpupillary Distance | 56–74 mm |
| Diopter Adjustment Range | ±3 |
| Twilight Factor | 20.2 |
| Relative Brightness | 18.23 |
| Lens Coatings | Fully broadband multi-coated |
| Prism Coatings | Phase and dielectric coatings |
| Objective Lens Type | Extra-low dispersion (ED) glass |
| Body Material | Magnesium alloy |
| Exterior Protection | Rubber-armored body |
| Waterproof | Yes |
| Nitrogen Filled | Yes |
| Tripod Adaptable | Yes; adapter sold separately |
| Dimensions | 139.7 × 124.46 × 50.8 mm (5.5 × 4.9 × 2 in) |
| Weight | 666 g (23.5 oz) |
| Included Accessories | Objective lens caps, eyepiece caps, neck strap, carrying harness, lens cloth, soft carrying case, and instruction manual |
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Where to Buy
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