spotting scopes and accessories

Founder Optics Bino-One Scope 72 - 72 mm ED with Divergent Binoview Spotting Scope - BOS72

Founder Optics   ——   SKU: FOO-BOS72
$1,484.00 CAD
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Product Info

Founder Optics Bino One Spotting Scope with Divergent Binoviewer & 2 Eyepieces - 72mm


The Founder Optics Bino-One 72 is an amazing spotting scope designed for 3D views! Enjoy viewing comfort and spectacular views through the innovative, built-in binocular viewer.  Two 12.5 mm eyepieces are included that provide 35X magnification, but you can switch the eyepieces out for a change in magnification whenever you like.

This Founder BOS spotting scope has a large 72 mm aperture for bright views during the day and nice light-gathering at night.  The ED (extra-low dispersion) lens is made from Ohara FPL-53 glass, resulting in sharp images with virtually zero distortion and very low chromatic aberration.  When not in use, you'll like the elegant attached lens cap as well as the included hard carry case!

Extra Features of the 72 mm Bino-One Spotting Scope

Quality Interchangeable Eyepieces:  The BOS72 comes with two 12.5 mm long eye relief (20 mm) 1.25" eyepieces.  The lenses are fully multi-coated and install easily into the binoviewer with twist lock collars.

IPD Scale:  Set the distance between the two eyepieces by sliding the interpupillary distance scale up or down until you find the spacing that is most comfortable.  The scale runs from 58 mm to 74 mm and is conveniently located between the eyepieces on the binoviewer body.

Diopter Focus:  Don't have 20/20 vision?  Simply turn the Diopter Focusing Ring, with its + and - markings, until the image is sharp.

360 Rotation:  The green collar that connects the binoviewer to the spotting scope can be loosened, allowing you to rotate the eyepieces for the most comfortable viewing.  This is especially nice when doing astronomy and the scope is pointing up near the zenith!

Serialized Product:  A name plate on the back of each spotting scope is stamped with a serial number.  This allows for better quality control at the manufacturer level and better. more targeted service should you require it.

Cool Vixen-type Dovetail:  You can attach your Bino-One to either a tripod (via a 1/4-20 threaded hole) or to an alt-azimuth or equatorial mount via the included Vixen-Style Dovetail plate.

Strong Carry Case Included:  Each spotting scope comes in its own hard carry case for the ultimate in protection for storage or travel.  Custom cut foam snuggles your scope with binoviewer and eyepieces attached, and there is room for more eyepieces should you desire.  


  • Aperture: 72 mm
  • Focal Length: 432 mm
  • Focal Ratio: f/6
  • Diagonal: Patented built-in Binoviewer
  • Optics: Fully multi-coated ED
  • Field of View: 2.3 degrees
  • Field of View at 1000 Yards: 119 Feet
  • Near Focus: 19 Feet (5.75 Meters)
  • Tripod Socket: Standard 1/4"-20 UNC
  • Dimensions: 332 mm L x 107 mm W x 249 mm H
  • Eyepieces Included: Two 12.5 mm Long Eye Relief 1.25"
  • Magnification with Included Eyepieces: 40X
  • Weight: 5.3 lbs/2.4kg

What's In the Box

  • 72 mm Bino-One Spotting Scope with Built-In Binoviewer
  • Hard Carry Case
  • Two (2) 12.5 mm Alien Eyepieces
  • Vixen-Style Dovetail
  • Tripod Socket
  • Product Manual & Card

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