Celestron TrailSeeker ED 8x42 Binoculars

Product Description

The TrailSeeker ED 8x42mm binocular provides high-level outdoor performance, a perfect choice for avid birders and outdoor enthusiasts. TrailSeeker ED is packed with optical, mechanical, and ergonomic features that make it comparable to binoculars costing two to five times as much.

ED Objective Lenses
Extra-Low Dispersion (ED) glass virtually eliminates chromatic aberration, also known as colour fringing, a visual defect common in binoculars. TrailSeeker ED delivers edge-to-edge sharpness with excellent colour correction and razor-sharp images.

Not all ED glass is created equal. Celestron’s high quality ED glass delivers visibly brighter, sharper images compared to non-ED binoculars. The difference is especially apparent in low light conditions, such as at dawn or dusk

The TrailSeeker ED 8x42mm binocular provides high-level outdoor performance—a perfect choice for avid birders and outdoor enthusiasts. TrailSeeker ED is packed with optical, mechanical, and ergonomic features that make it comparable to binoculars costing two to five times as much.

Coatings and Prisms
TrailSeeker ED features fully multi-coated optics and phase- and dielectric-coated BaK-4 prisms. A binocular can be considered “fully multi-coated” when all air-to-glass surfaces are coated with multiple layers of anti-reflectivity coatings so that the maximum amount of light passes through the glass to the eye.

The prism inside TrailSeeker ED is made of high quality BaK-4 glass with both phase and dielectric coatings so that more light is reflected off the prism and diverted through the eye. Taken together, fully multi-coatings and BaK-4 prisms maximize light transmission for the brightest, most detailed images possible.

The Body
TrailSeeker ED is composed of lightweight and durable magnesium alloy. Its tough, rigid frame is coated with rubber to stand up to hard use in the field. What’s more, the binocular is fully waterproof and filled with dry nitrogen gas to prevent internal fogging of lenses. TrailSeeeker ED can stand up to even the toughest outdoor conditions.

Viewing through TrailSeeker ED is comfortable for both eyeglass wearers and non-eyeglass wearers alike, thanks to the durable twist-up eyecups. Twist through multiple click stops to find the position that works best for you.

Specifications
Magnification: 8x
Objective Lens Diameter: 42mm (1.65")
Angular Field of View: 8.1°
Linear Field of View (@1000 yds) / @1000 m): 426ft (142m)
Exit Pupil: 5.2mm (.20")
Eye Relief: 17.2mm (.67")
Close Focus: 6.5 ft (2.16 m)
Interpupillary Distance (max): 74mm (2.91")
Interpupillary Distance (min): 56mm (2.20")
Diopter Adjustment Range: ±3
Twilight Factor: 17.8
Relative Brightness: 27.04
Limiting Stellar Magnitude: Ideal: 10.62
Moderate: 9.62
Poor: 8.62
Lens Coatings: Fully Multi-Coated
Prism Glass (Type): Bak-4
Prism Coatings: Phase and Dielectric Coated
Weight: 23.5 oz (666 g)
Environmental Protection: Waterproof
Nitrogen Filled: Yes
Tripod Adaptable: Yes
Carrying Case: Soft Case
Dimensions: 139.7mm x 124.46mm x 50.8mm (5.5" x 4.9" x 2")
Included Items: Objective Lens and eyepiece Caps
Neck Strap
Carrying Harness
Lens Cloth
Instruction Manual