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Orion - BT100 Premium Binocular Telescope*


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Availability: Available - Ships in 3-5 Days


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Manufactured by: Orion


Orion BT100 Binocular Telescope


Sometimes two eyes are better than one! This premium binocular telescope features large 100mm aperture objective lenses and fully multi-coated optics with BAK-4 prisms for gathering ultra-bright, high-contrast views of the night skies. The BT100s' 90-degree viewing angle allows comfortable tripod-mounting (tripod not included) with quality details such as retractable objective lens shades and individual eyepiece focus. The included 25mm Sirius Plossl eyepieces provide 24x magnification in the 609mm focal length binocular telescope. The standard 1.25" eyepiece holders are compatible with most 1.25" eyepiece pairs to provide different magnification levels. A removable carry handle, two lens caps and a hard carrying case is provided.


  • Binocular-telescope with large 100mm aperture objective lenses provides bright wide-field views rich in contrast , depth, and detail
  • Accepts most 1.25" interchangeable eyepieces so you can view at different magnifications (requires two eyepieces of the same focal length)
  • Includes two eyepieces (pair of 25mm Sirius Plossl) that provide 24x magnification through the 609mm focal length binocular-telescope
  • Fully multi-coated optics, BAK-4 prisms, and retractable lens shades maximize light throughput and minimize peripheral glare for optimized viewing performance
  • Individual eyepiece focus and adjustable interpupillary distance lets you get the most out of each and every view




Additional Information

Name Orion - BT100 Premium Binocular Telescope*
Manufacturer Orion
Model ORI-09515
Manufacturer Part No ORI-09515
Angular Field of View 2.2°
Apparent Field of View 52.8°
Diameter 100mm
Diopter Yes
Exit Pupil 4.1mm
Eye Relief 16.9mm
Focus System Individual eyepiece focus
Included Accessories Custom foam-lined hard carry case, 2 lock latches with keys
Interpupillary distance 57mm - 74mm
Linear Field of View (@1000 yds) 131.0 ft
Magnification 22x
Near Focus 50 ft.
Optical Coatings Fully multi-coated
Prisms BAK-4 Porro
Tripod Adaptable Yes
Warranty One year