Explore Scientific 16" f/4.5 Truss Tube Dobsonian Telescope

Explore Scientific 16" f/4.5 Truss Tube Dobsonian Telescope

Explore Scientific 16" f/4.5 Truss Tube Dobsonian Telescope

B&H # EXDOB164500 MFR # DOB1645-00
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Product Highlights

  • 16" / 406.4mm Aperture
  • 1826mm Focal Length, f/4.5 Focal Ratio
  • 10:1 2" Two-Speed Helical Focuser
  • Red-Dot LED Finderscope
  • Floor-Based Manual Alt-Az Mount
  • Altitude Tension Clutch
  • Dual Radial Main-Mirror Fans
  • Tool-Free Breakdown and Assembly
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Aperture: 16" f/4.5

10" f/5.0

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12" f/5.0

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16" f/4.5 20" f/3.65

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Price:  $2,199.99

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Explore Scientific DOB1645-00 overview

  • 1Description

Sporting the extremely large light bucket users have come to expect from a Dob, the Explore Scientific 16" f/4.5 Truss Tube Dobsonian Telescope gives users exceptional performance with a low dollar-to-aperture cost. Its over-sized parabolic primary mirror is highly reflective and corrects spherical aberration to eliminate distortion across the entire field of view, especially at the edges.

The large 16" aperture draws in a tremendous amount of light to reveal awe-inspiring details of the Moon and planets. Deep sky objects will be visible even for inexperienced observers, and bright star clusters can be resolved to their core. Its f/4.5 focal ratio and 10:1 dual-speed helical focuser make this an ideal choice for imaging. The fast focal ratio enables devices to capture images in less time than slower scopes, while the unique focusing mechanism employed in the helical design gives it the ability to achieve tack-sharp focusing with zero backlash that rack-and-pinion focusers are generally unable to. This 2" focuser will accept larger eyepieces so users can enjoy a truly immersive visual experience and will ensure larger imaging sensors are completely covered.

The rocker box weighs in at 22 pounds and provides a rock-steady observational platform with very low vibration. This rocker mount features high-altitude bearings with aluminum structures that allow for fine adjustment flows at high magnifications, and dual radial primary mirror fans to quickly adjust the temperature to reduce distortion. Finally, the tension control handle allows users to adjust the settings, enabling them to move the mount easily and smoothly by hand with minimal vibration and maintain its position when released.

Optical Performance
  • 16" aperture
  • f/4.5 focal ratio
  • 1826mm focal length
  • Highly reflective mirrors increase image brightness
  • 72mm secondary mirror, 25% obstruction
  • Dual radial primary mirror fans adjust the mirror temperature to reduce distortion
    • Runs on eight user-supplied AA batteries
  • Includes collimation assist tool for adjustments in the field
  • Manual rocker mount design
  • High altitude bearings for a wide adjustment and travel range
  • Tension control handle allows for smoother rotation to reduce vibrations and limit over-compensation
  • 10:1 dual-speed helical
  • Accepts 2" eyepieces and accessories
  • Helical focusers use a toothless design that allows for smooth and precise focusing without backlash
UPC: 812257015580
In the Box
Explore Scientific 16" f/4.5 Truss Tube Dobsonian Telescope
  • Collimation Assist Tool
  • Red Dot LED Finderscope
  • Limited 1-Year USA Warranty, Extendable to Transferrable Lifetime Warranty with Registration
  • Table of Contents
    • 1Description

    Explore Scientific DOB1645-00 specs

    Optical Design Dobsonian reflector
    Aperture 16" / 406.4 mm
    Focal Length 1826mm
    Focal Ratio f/4.5
    Eyepiece Barrel Diameter 2"
    Diagonal N/A
    Finderscope Red dot LED
    Tripod None
    Mount Type Manual alt-az
    Power Source 8 x AA batteries, for fans
    Optical Tube Dimensions Not specified by manufacturer
    Weight Primary mirror: 66.1 lb / 30.0 kg
    Rocker box: 22.0 lb / 10.0 kg
    Total: 88.1 lb / 40.0 kg
    Packaging Info
    Package Weight 109.0 lb
    Box Dimensions (LxWxH) 50.0 x 25.5 x 19.5"

    Explore Scientific DOB1645-00 reviews

    16" f/4.5 Truss Tube Dobsonian Telescope is rated 5.0 out of 5 by 2.
    Rated 5 out of 5 by from Great scope This is a big light great telescope, arrived intact with very nice packaging, didn't had any issues with movement but counterweights is essential, collimation was very easy using laser colimator, focuser is smooth and able to hold my heavy explore scientific 30mm, replace the red dot finder with terlad , every thing worked just fine , only problem was small aluminium shaving pieces were everywhere, need to clean it good before first use.
    Date published: 2018-04-21
    Rated 5 out of 5 by from 16 f/4.5 Truss Tube Dobsonian Telescope The telescope works great the images I see in it are the best I have seen ever . It is easy to assemble and not real heavy the only thing that I would do is make the instructions a little easier to understand when assembling the telescope
    Date published: 2017-02-23
    • y_2018, m_10, d_16, h_15
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