Welcome to The World’s Leading Supplier of High-Powered Binoculars

Lineup of Oberwerk binocular telescopes on a black background.

Why Choose a Binocular Telescope?

A Better View Awaits: Explore with Oberwerk Binocular Telescopes

If you have a million-dollar view—or love exploring the night sky—nothing compares to Oberwerk’s XL Series binocular telescopes. Unlike single-eye telescopes, our binocular design offers unmatched depth, clarity, and comfort. With both eyes open, you’ll experience celestial and long-range terrestrial views with greater detail and a more natural perspective.

Woman looking through an Oberwerk binocular telescope on a balcony with a child and a dog.

The bottom line, then, is that the point of these binoculars isn’t to see the closest, most detailed view of a celestial object, but rather to see a unique view using both eyes at once. Which brings up an important fact: Using both eyes eliminates eye fatigue. I have spent many years looking through telescopes with apertures as large as 24 inches with only one eye. After a while spent staring at an object, my eye got tired; the more I looked, the less I saw. With both eyes, I can look as long as I want. And in this case, the more you look, the more you see.

Tony Hallas, AstroImager, Astronomy Magazine, Feb 2025 reviewing our BT-127-XL-SD

What Sets us Apart?

Uncompromising Quality and Performance

Oberwerk binoculars have a rich history, beginning with the famous “Chinese Border Guard Binoculars” discovered by Oberwerk President, Kevin Busarow, in 1999. Since then, we’ve continuously improved the design, resulting in a more powerful, lighter, and sleeker binocular telescope that offers exceptional optical stability.

Each Oberwerk binocular is crafted with precision and undergoes rigorous collimation before delivery to ensure the highest performance. This guarantees that your binoculars will be perfectly aligned and ready for use as soon as you receive them.

Every Oberwerk Binocular Features:

Magnesium Bodies: Durable, lightweight, and portable
Nitrogen-Filled: Prevents fogging, protects against internal moisture and corrosion, and maintains waterproof seals, ensuring clear, reliable performance in various weather conditions
Fully Multi-Coated Lenses: Made from the finest optical glass to provide superior clarity and performance
5-Year Limited Warranty: Covers any defects in materials or workmanship, so you can confidently enjoy your binoculars for years to come

No Oberwerk binocular leaves our facility in Dayton, Ohio, until it has passed a rigorous quality inspection and precise collimation—only then is it given a serial number to ensure it meets our high standards.

Quality Checklist that comes with every Oberwerk bincoular

Objective size refers to the diameter of the front lenses on your binocular telescope. The larger the objective, the more light the telescope gathers, resulting in brighter, clearer images—especially in low-light conditions like stargazing or early-morning birdwatching.

Our XL Binocular Telescopes come with a range of objective sizes, from 70mm to 127mm, giving you the flexibility to choose the perfect size for your viewing needs. The larger the objective, the more detail you’ll be able to see, making it easier to observe distant celestial objects or distant landscapes with greater clarity.

Chart demonstrating the differences between objective lens sizes.

The magnification of your binocular telescope is determined by the focal length of the eyepieces you use. The longer the focal length, the lower the magnification; the shorter the focal length, the higher the magnification. Our BT models come standard with 14mm eyepieces, but we also offer optional 7mm and 22mm eyepieces to adjust the magnification to suit your needs.

Oberwerk binocular telescopes are compatible with any standard-size 1.25″ telescope eyepiece, allowing for a wide range of magnification options based on the eyepiece focal length you select.

Focal length	22mm	14mm	7mm
BT-70XL	18x	28x	56x
BT-82XL	20x	32x	64x
BT-100XL	25x	40x	80x
BT-120XL	30x	48x	96x
BT-127XL	30x	46x	93x

Oberwerk Binocular Telescope eyepieces. A set of each in a row, six in total.

When it comes to optics, the quality of the glass is crucial. Both ED (Extra-low Dispersion) and SD (Super-low Dispersion) glass are designed to reduce chromatic aberration, which is the color fringing that appears around bright objects viewed through optics.

What’s the difference?

ED Glass: This high-performance optical material significantly reduces chromatic aberration by slowing down different wavelengths of light as they pass through the objective lenses. The result? Sharper, more color-accurate images.

SD Glass: A more advanced and expensive type of glass that virtually eliminates chromatic aberration, delivering the sharpest, most true-to-life views possible within the binocular’s recommended magnification range. With SD glass, you get the ultimate in optical clarity—perfect for the discerning viewer who demands the highest image quality.

An Oberwerk Walnut TR3 tripod in the foreground and a Maple TR3 tripod in the background.

Solid, Beautiful, and Built for Performance

Oberwerk TR3 Hardwood Tripods

Oberwerk’s TR3 hardwood tripods are custom-built and assembled in Dayton, Ohio, from solid American maple (light honey finish) or walnut (dark and rich). These tripods offer exceptional stability and are designed to support our XL Series binocular telescopes with elegance.

Slip-Stop Leg Clamps: Prevent accidental crashes due to humidity changes. The legs are designed with a reverse taper to tighten themselves if the leg clamp slips.
Laser-Engraved Height Scales: For precise, easy height adjustments.
Durable Construction: Non-wood components are made from aluminum and stainless steel for long-lasting performance.

Find the Perfect Setup

Mounting Options for Your Binocular Telescope

We offer a range of mounting options to ensure you get the most out of your binocular telescope setup. Each option is designed to provide smooth, stable performance for your BT model.

SmallRig Tripod Head on an Oberwerk Carbon Fiber Elevator Lift.

Carbon Fiber Elevator with Smallrig DH10 or Nitrotech 608 Head

Carbon Fiber Elevator: Allows for an additional 18″ height adjustment for flexible viewing angles.
Smallrig DH10 Head: All-aluminum fluid head provides smooth azimuth and altitude motion.
Nitrotech 608 Head: With a continuously variable counterbalance system, this is the ultimate head for an easy steering experience.

Oberwerk 240mm XL Fork Mount

Built for smooth stability and effortless adjustments, this mount ensures secure attachment and optimal balance. With a quick-release bayonet adapter, it offers tool-free attachment to any tripod with a 3/8″ stud.

Nitrotech 612 Head

Featuring a continuously variable counterbalance system, this head is designed for easy steering and can handle heavier loads with ease, providing stability for more demanding setups.

Oberwerk 280mm XL Fork Mount

Built for smooth stability and effortless adjustments, this mount ensures secure attachment and optimal balance. The adjustable side plates allow for precise height adjustments, ensuring the best viewing position. With a quick-release bayonet adapter, it offers tool-free attachment to any tripod with a 3/8″ stud.

iOptron HAZ31

iOptron HAZ31 Go-To Mount: Featuring strain-wave technology, the HAZ31 offers a counterweight-free experience for loads up to 31 lbs.. With its built-in precision level indicator and GPS-based auto-setup, this computerized alt-azimuth mount quickly slews to 212K+ night sky objects.

iOptron HAZ46

iOptron HAZ46 Go-To Mount: The HAZ46 supports up to 44 lbs. without counterweights, offering the same GPS-based auto-setup and tracking features as the HAZ31. It includes an internal rechargeable lithium-ion battery for added convenience, providing extra capacity at a great value.

Need Help Choosing?

Which XL is Right for You

Oberwerk is known for their personalized customer service. Call to discuss your needs and you’ll likely be talking to Oberwerk President Kevin Busarow directly. Since 1999, we’ve been growing our reputation for being Obsessed with Binoculars® one happy customer at a time.

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What Others are Saying

Customer Reviews

BT-100XL-SD

BT-120XL-SD

TR3 Hardwood Tripod

BT-70XL-ED

BT-100XL-ED

BT-127XL-SD

BT-82XL-ED

A Brand You Can Trust

But, I’ve Never Heard of Oberwerk

Founded in 1999, Oberwerk is the world’s leading supplier of high-power binoculars (capable of 40x or higher magnification), quietly outselling all other brands— combined! All Oberwerk binoculars, from $100 to $6000, are thoroughly hand-inspected and collimated before being shipped, following a strict quality assurance checklist. Read some of our 5 Star reviews. We’ve built a following among amateur astronomers and birdwatchers across the globe.

Our History