Meade LightBridge 406mm f/4.5 Truss-Tube Dobsonian AZ Telescope

Meade LightBridge 406mm f/4.5 Truss-Tube Dobsonian AZ Telescope

Meade LightBridge 406mm f/4.5 Truss-Tube Dobsonian AZ Telescope

B&H # MEL16TTD MFR # 1645-05-03
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Product Highlights

  • Large 406mm (16") Dobsonian Reflector
  • 1829mm Focal Length, f/4.5 Focal Ratio
  • Rigid Anodized Aluminum Truss Tubes
  • Large 2" Two-Speed Crayford Focuser
  • Focus Lock and Tension Adjustment Knobs
  • Series 4000 26mm QX Wide-Angle Eyepiece
  • Red-Dot Finder with Bracket
  • Primary Mirror Cooling Fan
  • Manual Alt-Azimuth Floor Mount
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Meade LightBridge overview

  • 1Description

Sporting an extra-large light bucket that is the hallmark of a Dob, the Meade Instruments LightBridge 406mm f/4.5 Truss-Tube Dobsonian AZ Telescope gives users high performance at a reasonable price. Its large primary parabolic mirror draws in copious amounts of light to reveal awe-inspiring details on the Moon and planets, and deep sky objects will be visible even for inexperienced observers.

This telescope's impressively fast f/4.5 focal ratio and 10:1 dual-speed Crayford focuser make this an ideal choice for imaging deep sky objects. The fast focal ratio enables devices to capture images in less time than slower scopes with a significant reduction in the noise that can decrease resolution on imaging sensors. The focusing mechanism employed in the Crayford design gives it the ability to achieve tack-sharp focusing with zero backlash, and with a focus lock and tension adjustment, the focuser performs with the high precision required for viewing and imaging deep space objects. 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. An included adapter allows the use of the smaller, more common, 1.25" eyepieces and accessories to expand its usability and versatility.

The floor mount weighs in at 54 pounds and provides a rock-steady observational platform with very low vibration. This rocker mount features Teflon-coated roller azimuth bearings and large-diameter aluminum altitude bearings that allow the optical tube to move smoothly with limited vibrations. Finally, the tension control handle lets users adjust the settings, allowing them to move the mount easily and smoothly by hand with minimal vibration and maintain its position when released.

Optical Tube Assembly
  • Large 406.4mm (16") aperture draws in tremendous amounts of light for detailed deep-sky viewing
  • Fast f/4.5 focal ratio shortens the optical tube to be more manageable
  • Long 1829mm focal length increases maximum magnification potential, allowing easier use of short focal length eyepieces
  • Dobsonian-style reflector configuration provides a high dollar-to-aperture ratio
  • Rigid, open-truss design reduces overall weight versus solid-tube designs while being easier to transport and store
  • Lightweight and strong silver-finished anodized aluminum truss tubes
  • Four-vane steel secondary mirror support
  • Resolution: 0.285 arcsec
  • 10:1 two-speed Crayford focuser allows ultra-fine focusing without backlash — especially useful for deep-sky objects and splitting binary stars or clusters
  • 2" drawtube allows the use of larger eyepieces, which generally have longer eye reliefs for more comfortable viewing — especially at high power
  • Focus lock maintains focuser placement and tension adjustment allow user to adjust the pressure to improve focuser feel and precision
  • Optical tube assembly cooling fan speeds the cool-down process of the primary mirror, improving image quality and reducing acclimation period when moving from a warm interior to cooler exterior; runs on eight user-supplied AA batteries
  • Weight: 74 pounds
  • Manual alt-azimuth floor mount
  • Laminated wooden construction helps to absorb vibration while adding stability
  • Teflon-coated roller azimuth bearings provide smooth and even movement with limited vibrations
  • Large-diameter aluminum altitude bearings are easy to move by hand
  • Hand-adjustable variable-tension brake for smooth and stable movement
  • Weight: 54 pounds
Included Accessories
  • 2" barrel diameter ensures a comfortable eye relief and exit pupil
  • Accepts most 2" astronomical eyepiece filters
  • 26mm eyepiece produces 70x power
  • Wide-angle design provides sweeping views
Reducer adapter:
  • 2"-to-1.25" adapter allows the use of the smaller, more common, eyepieces and accessories in the large drawtube
Red-dot finder:
  • Un-magnified view ensures a wide field of view for easier alignment and faster star-hopping navigation
  • Four selectable reticle patterns allow user to tailor pattern to their needs or preferences
  • Seven intensity levels ensure reticle visibility without affecting night-adjusted vision


In the Box
Meade LightBridge 406mm f/4.5 Truss-Tube Dobsonian AZ Telescope
  • 26mm QX Wide-Angle Eyepiece
  • 1.25" Reducer Adapter
  • Red-Dot Finder with Bracket
  • Mount Base and Cradle
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Meade LightBridge specs

    Optical Design Dobsonian reflector
    Aperture 406.4mm
    Focal Length 1829.0mm
    Focal Ratio f/4.5
    Eyepiece Barrel Diameter 2"
    1.25", with included reducer adapter
    Diagonal None
    Finderscope Red-dot
    Tripod None
    Mount Type Manual alt-azimuth
    Motor None
    GO-TO Capability None
    Power Source 8 x AA batteries, for cooling fan
    Optical Tube Dimensions Not specified by manufacturer
    Weight OTA: 74.0 lb / 33.6 kg
    Mount: 54.0 lb / 24.5 kg
    Total: 128.0 lb / 58.1 kg
    Packaging Infoveqatcdwdrsueqtaxdeudsuuyuz
    Package Weight 157.85 lb
    Box Dimensions (LxWxH) 41.0 x 30.0 x 24.55"

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