Orion GiantView BT-100 ED 90-degree Binocular Telescope
Item #51878
$2,799.99 $2,699.99
With huge 100mm objective lenses, the Orion GiantView BT-100 ED 90 Binocular Telescope delivers an immersive observing experience. Using ED glass provides an incredibly sharp and high contrast image of both distant landscapes and wispy nebulae.
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  • More Info
    • Huge 100mm objective lenses provide incredibly bright and immersive views of starry skies and daytime scenes
    • ED lenses provide the sharpest, highest contrast image possible while minimizing false color (chromatic aberration)
    • Accepts interchangeable 1.25" eyepiece pairs for a variety of magnification options (additional eyepieces sold separately)
    • Included pair of 18mm, 65 eyepieces provide 31x views out of the box
    • Waterproof and nitrogen purged, featuring 90 eyepiece orientation (specifically geared towards comfortable astronomical viewing), and weighs in at 16.8 pounds

    With huge 100mm objective lenses, the Orion GiantView BT-100 ED 90 Binocular Telescope delivers an immersive observing experience. Stargazing or viewing distant terrestrial objects with two eyes provides an amazing amount of depth while also making observations more comfortable. Views of lunar craters to wispy nebulae will take on an almost 3D feel in the GiantView BT-100 ED. The 100mm aperture objective lenses gather 56% more light than 80mm binoculars, so you'll be able to see more objects in the sky with greater clarity. The Extra Low Dispersion lenses (ED) provide the highest quality image, minimizing false color and providing extremely detailed views. And the 90 angle provides the most comfortable viewing angle when aiming high into the night sky.

    The GiantView BT-100 ED Binocular Telescope includes a pair of 18mm 65 1.25" eyepieces which provide 31x magnification and a 2.1 field. Individual eyepiece focusers provide precise focus control, while compression rings hold the eyepieces securely in place.

    One of our favorite features of the BT-100 ED is its ability to accept pairs of 1.25" eyepieces so you can control magnification depending on the object (requires two identical 1.25" eyepieces to work). For the best results, we recommend using pairs of 8mm or longer focal length 1.25" eyepieces with the BT-100 ED.

    You can also use pairs of 1.25" light pollution filters to significantly improve contrast while observing deep sky objects. With filters installed, the BT-100 ED provides seriously amazing views of many deep sky delicacies.

    Thanks to its sealed construction and nitrogen purged body, the rugged BT-100 is waterproof for use in damp conditions, but it's not designed for permanent outdoor placement. The GiantView BT-100 ED weighs 16.8 lbs. and requires a solid mount for stable support. A built-in 1/4"-20 socket allows secure mount or dovetail plate attachment. NOTE: Standard camera tripods are not recommended for use with the GiantView BT-100 ED. Includes hard foam-lined carry case.

    Warranty

    Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.

    Product Support

    Visit our product support section for instruction manuals and more

  • Specs
    • Best for viewing:
      Lunar & bright deep sky
    • User level:
      Advanced
    • Magnification:
      31x
    • Optical diameter:
      100mm
    • Field of view - angular:
      2.1°
    • Field of view - linear:
      112.0 ft./1000 yd
    • Apparent field of view:
      65.0°
    • Eye relief:
      17.0mm
    • Exit pupil:
      3.3mm
    • Near focus:
      90 ft.
    • Coatings:
      Fully multi-coated
    • Prism:
      BAK-4 Porro
    • Interpupillary distance range:
      55mm - 83mm
    • Focus style:
      Individual eyepiece focus
    • Waterproof:
      Yes
    • Tripod adaptable:
      Yes
    • Diopter adjustment:
      Yes
    • Weight:
      16.8 lbs.
    • Height:
      8.0 in.
    • Additional included accessories:
      18mm eyepieces (set of two), Carry handle, Eyepiece and objective lens caps
    • Other features:
      Nitrogen purged, Interchangeable eyepieces, Waterproof
    • Warranty:
      One year
  • In The Box

    Orion GiantView BT-100 ED Binocular Telescope
    Two 18mm 65 1.25" eyepieces
    Two objective lens caps
    Two eyepiece caps
    Hard foam-lined carry case

  • Important Shipping Information

    Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

    A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.

    Standard Delivery: $0.00
    Standard Delivery to Canada: $50.00
    3 Day Delivery: $100.00
    2 Day Delivery: $100.00
    Next Day Delivery: $200.00