The Celestron TrailSeeker ED 8x42 binoculars are high-performance optical tools designed for avid outdoor enthusiasts, including birders, hunters, and nature observers. Recognized for offering exceptional value, they deliver optical and mechanical features often found in binoculars costing two to five times more . Its reputation is backed by awards, including being named a "Top Pick for Affordable Full-Size Binoculars" by the Cornell Lab of Ornithology .
These 8x42 binoculars strike an excellent balance between magnification and light-gathering ability, making them versatile for various lighting conditions, from dawn to dusk. The model number for this product is 71405.
Specifications
Here are the detailed specifications for the Celestron TrailSeeker ED 8x42:
Specification
Details
Model Number
71405
Magnification
8x
Objective Lens Diameter
42 mm
Angular Field of View
8.1°
Linear Field of View
142 m @ 1000 m / 426 ft @ 1000 yds
Exit Pupil
5.2 mm
Eye Relief
17.2 mm
Close Focus
2.16 m / 6.5 ft
Interpupillary Distance (IPD)
56 - 74 mm
Diopter Adjustment Range
±3
Prism Glass / Type
BaK-4 / Roof
Prism Coatings
Phase and Dielectric
Lens Coatings
Fully Multi-Coated (Fully Broadband Multi-Coated)
Weight
666 g / 23.5 oz
Dimensions (L x W x H)
140 x 124 x 51 mm / 5.5" x 4.9" x 2"
Environmental Protection
Waterproof & Nitrogen Filled (Fogproof)
Tripod Adaptable
Yes
Key Features
ED Objective Lenses: The binoculars feature Extra-low Dispersion (ED) glass, which virtually eliminates chromatic aberration (color fringing). This ensures images have superior resolution, contrast, and accurate color reproduction, which is particularly noticeable in low-light conditions .
Advanced Prism System with High-End Coatings: Equipped with BaK-4 prisms that are coated with both phase and dielectric coatings. This combination maximizes light reflection through the prism, resulting in bright, sharp, and true-to-life colors .
Fully Multi-Coated Optics: All air-to-glass surfaces are coated with multiple layers of anti-reflective material. This allows for maximum light transmission through the optical path for the brightest possible images .
Robust and Ergonomic Body: The housing is made from a lightweight yet durable magnesium alloy, wrapped in a protective rubber armor for a secure grip and enhanced durability in the field .
Weatherproof Construction: The binoculars are fully waterproof and purged with dry nitrogen gas. This prevents internal fogging of the lenses when moving through varying temperatures and humidity, ensuring reliable performance in all weather conditions .
Versatile Close Focus: With a close focus distance of just 6.5 feet (2.16 m), they are excellent for observing subjects at close range, such as butterflies, plants, or insects, in addition to distant wildlife .
User-Friendly Design: The binoculars feature durable, multi-position twist-up eyecups that make them comfortable for both eyeglass wearers and non-wearers. They also have a +/-3 diopter adjustment to fine-tune for differences between your eyes .
Complete Package and Versatility: The binocular comes with both a neck strap and a carrying harness for personalized comfort. It is also tripod adaptable for long observation sessions .