Experience Stellar Clarity

Want bright and clear images? Get BT-70 SF Binoculars that will help you observe celestial and terrestrial objects without worrying about fogging or weather damage.

Features

• Powerful Large Binoculars: 70 mm objective diameter and 400 mm focal length for exceptional light gathering and image clarity.
• Dual-Purpose Viewing: Ideal for observing celestial objects at night and distant terrestrial targets during the day.
• Durability and Weather Resistance: IPX6 waterproof and nitrogen-filled design prevent fogging and withstand harsh weather conditions.
• Comfortable Viewing Angle: 45-degree angle ensures a fatigue-free experience, even during extended observations.
• High-Quality Eyepieces: Includes two premium waterproof 62-degree 20mm LER eyepieces for a 20x magnification with a wide 3.1-degree field of view.
• Interchangeable Eyepieces: Compatible with all 1.25 inch / 31.7mm diameter eyepieces, allowing customization of magnification and field of view.
• Enhanced Image Quality: Professional Enhanced Multilayer Deposition (EMD) lens coatings and achromatic refractor Porro optics provide bright, sharp, and color-accurate images.
• Sturdy Construction: Lightweight magnesium housing with integrated carrying handle for easy transport and secure tripod assembly.
• Extendable Dew Caps: Minimize condensation on lenses and protect against stray light, ensuring clear images in various conditions.
• Versatile Tripod Compatibility: Fits standard 1/4 inch and 3/8 inch photo threads for stable mounting, with an optional U-Mount for enhanced stability.

The Explore Scientific BT-70 SF Large Binoculars are for you if…

• You are an Astronomy Enthusiast: Seeking unparalleled clarity and detail in your stargazing sessions, with the ability to observe the moon, planets, and deep-sky objects.
• You are a Nature and Wildlife Observer: Looking for bright, brilliant images of distant wildlife and landscapes, even in low light conditions.
• You are a Maritime or Aviation Enthusiast: Wanting to spot ships, aircraft, and distant objects with precision and reliability.
• You are an Outdoor Adventurer: Needing robust, weather-resistant equipment that can withstand tough outdoor conditions while providing clear and detailed observations.
• You Value Versatility and Customization: Appreciating the ability to interchange eyepieces and use various filters for personalized viewing experiences.

Experience the night sky like never before with the Explore Scientific BT-70 SF Large Binoculars. With their 70 mm objective diameter and 400 mm focal length, these binoculars provide exceptional light-gathering capability, allowing you to observe celestial objects in stunning detail. Whether you're gazing at the moon's craters or distant star clusters, these binoculars deliver bright, sharp images, making every stargazing session unforgettable.

For nature and wildlife enthusiasts, the BT-70 SF offers unparalleled daytime performance. Observe distant landscapes and wildlife with precision, thanks to the high-quality achromatic refractor Porro optics and professional Enhanced Multilayer Deposition (EMD) lens coatings. The 20x magnification and wide 3.1-degree field of view ensure that you won't miss any details, whether you're tracking a bird in flight or spotting wildlife from afar.

Durability and weather resistance are key features of the BT-70 SF, making them ideal for outdoor adventures. The IPX6 waterproof and nitrogen-filled design prevents internal fogging and withstands harsh weather conditions, ensuring reliable performance in any environment. The lightweight magnesium housing and integrated carrying handle make these binoculars easy to transport and handle, whether you're hiking through rugged terrain or setting up on a tripod.

Comfort and ease of use are also top priorities with the BT-70 SF. The 45-degree viewing angle allows for relaxed, extended viewing sessions without straining your neck or eyes. The long eye relief eyepieces (15mm) and soft silicone eyecups provide a comfortable viewing experience, even for eyeglass wearers. With the fine helical individual focusing mechanism, you can achieve precise focus effortlessly, ensuring the sharpest images every time.

Customization and versatility are standout features of the BT-70 SF. The interchangeable eyepieces with a 1.25 inch / 31.7mm plug-in diameter allow you to adjust magnification and field of view to suit your needs. Choose from a wide range of eyepieces, with focal lengths from 8 to 26mm, and use various color and nebula filters for personalized viewing experiences. Compatible with a wide range of Explore Scientific eyepieces, including the 62 and 82 degree series, you can achieve magnifications from 15x to 50x. The precise brass compression ring clamp ensures a stable, tilt-free position for the eyepieces, providing reliable performance during every observation.

Investing in the Explore Scientific BT-70 SF Large Binoculars means unlocking a world of clarity and detail, whether you're an avid stargazer, a passionate wildlife observer, or an adventurous explorer. These binoculars combine advanced optical technology, robust construction, and versatile features to deliver an unparalleled viewing experience. Don't settle for less—elevate your observations with the BT-70 SF and see the world in a whole new light.

Elevate Your Observation Experience

To truly maximize the potential of your Explore Scientific BT-70 SF Large Binoculars, pairing them with the Explore Scientific U-mount with tripod for large binoculars is a must. This robust mount ensures that your binoculars remain stable, providing a vibration-free viewing experience even at the highest magnifications. The U-mount’s infinitely variable friction adjustment allows for smooth and precise movements in both azimuth and altitude axes, ensuring you can effortlessly track celestial objects or terrestrial targets.