Celestron 18-40x80 SkyMaster Zoom Binocular

Celestron 18-40x80 SkyMaster Zoom Binocular

Celestron 18-40x80 SkyMaster Zoom Binocular

B&H # CE1840X80SM MFR # 71021
In Stock

Product Highlights

  • Traditional BAK4 Porro Prisms
  • Anti-Reflection Multi-Coated Optics
  • Wide and Versatile Zoom Capability
  • Weather-Resistant Armored Housing
  • Large Center Focusing Wheel
  • Center Stabilizer Bar with Tripod Mount
  • Fold-Down Rubber Eyecups
  • Weight: 4.75 Pounds
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Celestron 71021 overview

  • 1Description

Equipped with an oversized aperture and a powerful zoom range, the Celestron 18-40x80 SkyMaster Zoom Binocular is an ideal choice for long-duration astronomical or long-distance terrestrial (land) use. The large objective ensures volumes of light are gathered to see better than smaller aperture models; and the easy zoom lever allows you to set the optic on low power to easily find your subject, then zoom in to make detailed up-close observations. This model was engineered with an exceptionally long eye relief to make it comfortable to look through for extended periods of time, while limiting eye strain. Because of the size and weight of the SkyMaster, Celestron engineered them with a center stabilizer bar and an adjustable tripod mount to provide a hands-free option and relieve arm strain, reduce fatigue, and limit vibrations.

Optical Performance
  • Broad and powerful 18-40x zoom magnification
  • Large, oversized 80mm objective lenses
  • Traditional Porro prism light path
  • BAK4 prisms deliver a round exit pupil, and a crisp and clear image with limited edge distortion
  • Multi-coated optics improve light transmission, color rendition, and contrast
  • Locate a subject more easily on low-power, then zoom in for a close-up view
  • 96-foot field of view at 1000 yards on 18x power
  • Long 20.3mm eye relief at 18x power
  • Exit pupil: 4.4mm at 18x; 2mm at 40x
Use and Handling
  • Large center focusing wheel is easy to manipulate, even when wearing gloves
  • Right-eye dioptric correction
  • Fold-down rubber eyecups for comfortable use with or without eyewear
Construction Details
  • Integrated center stabilizer bar adds rigidity while keeping the optical tubes parallel for improved views
  • Built-in tripod adapter on stabilizer bar reduces vibration and arm fatigue, and can be moved forward or back to precisely balance the binocular on the tripod/head
  • Protective rubber armoring provides a slip-resistant grip
  • Textured palm-pads improve grip security and stability
  • Weight: 4.75 pounds
UPC: 050234710213
In the Box
Celestron 18-40x80 SkyMaster Zoom Binocular
  • Soft Carrying Case
  • Neck Strap
  • Lens Cloth
  • One-Piece Ocular Rainguard
  • 2 x Objective Lens Caps
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description

    Celestron 71021 specs

    Prism Type Porro
    Magnification 18 to 40x
    Objective Lens Diameter 80 mm
    Angle of View 18x: 1.9° (Actual)
    Field of View 18x: 99.7' @ 1000 yd / 33.2 m @ 1000 m
    Minimum Focus Distance 106.2' / 32.4 m
    Exit Pupil Diameter 18x: 4.4 mm
    40x: 2 mm
    Eye Relief 18x: 20.3 mm
    Focus Type Center
    Tripod Mount Yes (Adapter Included)
    Weight 4.75 lb / 2.15 kg
    Packaging Info
    Package Weight 7.65 lb
    Box Dimensions (LxWxH) 17.7 x 11.8 x 7.9"

    Celestron 71021 reviews

    18-40x80 SkyMaster Zoom Binocular is rated 2.5 out of 5 by 2.
    Rated 3 out of 5 by from Decent glass, poor collimation. As a disclaimer, I purchased these binos after reading several reports of poor collimation from the manufacturer. They were in the power/price range I was looking for though. First night out, I had them mounted to a alt/az tripod for testing. I had Mars in the center of one eyepiece, and the very bottom right edge of the FOV in the other eyepiece, at the lowest power setting. Ugh. Took them back in the house and got my old birding binos out instead. Spent most of the next afternoon collimating them back into a usable state. Bottom line- I'd skip these unless your prepared to deal with fixing the collimation after purchase. The optics themselves are pretty decent for glass in this price range though.
    Date published: 2018-08-17
    Rated 2 out of 5 by from Very low quality would not purchase again Not a good value, even for the very inexpensive price. As delivered the collimation was way off, but luckily that is easy to fix. After adjusting the collimation the optics were a bit blurry at 18x, but got very blurry as the zoom increased. B&H is the best! The quickly provided an RMA with a shipping label which will save me money on the return. Lesson Learned: I should have bought a more expensive and higher quality pair of binoculars.
    Date published: 2017-12-27
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