Celestron Regal ED Flat Field 10x42 Binoculars

The Celestron Regal ED Flat Field 10x42 binoculars (product ID 47032157929779) give you 10x magnification through a 42mm objective lens. That pairing delivers a 5.25mm exit pupil and a 113m field of view at 1000m wide enough to track fast-moving birds without constantly repositioning. Flat field technology eliminates the edge curvature you get with standard convex lenses so the image stays sharp right to the edges.

The objective lenses use ED (Extra-Low Dispersion) glass which virtually eliminates chromatic aberration the colour fringing that standard glass produces. All air-to-glass surfaces are fully multi-coated with multiple anti-reflective layers. The BaK-4 prisms carry phase coatings to maximise internal light reflection. The result is genuinely bright, colour-accurate images that are especially noticeable at dawn and dusk.

The body is magnesium alloy light at 768g but tough. It is fully waterproof and nitrogen-filled to prevent internal fogging. Metal twist-up eyecups with multiple click stops make it comfortable for both spectacle wearers and those without. Eye relief is 20.2mm. Close focus is just 4.9 feet.

A lifetime manufacturer's warranty backs the Regal ED. It includes a hard shell case, padded strap, cross-body harness, eyepiece cover and tetherable objective covers. Tripod adaptable with a separately sold adapter.

The 10x42 configuration gives a 4.2mm exit pupil adequate for daylight and low light use. ED glass reduces chromatic aberration by controlling how different light wavelengths pass through the lens. Flat field technology corrects the natural curvature of convex lenses so the image stays sharp edge to edge. BaK-4 prisms with phase coatings reflect more light internally than standard prisms. Fully multi-coated optics on all air-to-glass surfaces cut reflective loss to a minimum. Together these systems deliver high contrast, colour-accurate images with strong light transmission.

The chassis is magnesium alloy strong and light at 768g. The body is rubber-armoured for grip and impact resistance. Objective lenses use ED extra-low dispersion glass. Internal BaK-4 glass prisms carry phase coatings. All lens surfaces have multiple layers of anti-reflective coating applied.

Brush loose dust off lenses before wiping with a clean microfibre cloth. Store in the included hard shell case when not in use. Keep the binoculars dry and check the hinge and eyecups regularly for wear. The lifetime warranty requires the binoculars to be kept in normal working condition with no signs of misuse or damage.