Generation II 16-inch Truss Tube Dobsonian Telescope

Sale price$ 3,599.99
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Product options: 16” f/4.5

The Generation II 16-inch Truss Tube Dobsonian Telescope redefines deep sky observing with its massive 406mm (16-inch) primary mirror, delivering over 2,400 times the light-gathering power of the naked eye. Designed for serious amateurs and passionate deep sky observers, this telescope reveals stunning details on planets, star clusters, nebulae, and galaxies—even to those new to astronomy. Thanks to its innovative truss tube design, the scope disassembles easily without tools for convenient transport—even in small cars. The optimized aluminum structure and high-altitude bearings provide exceptional stiffness and smooth, precise motion at high magnifications. Equipped with a 2" focuser featuring helical gearing and a 10:1 reduction for fine focus control, an LED Red Dot Finder, and a collimation assist tool, this Dobsonian is ready to perform at the highest level. Dual radial fans accelerate mirror cooling to reach thermal equilibrium quickly, improving image clarity. Optional coma correctors are available to enhance astrophotography performance further.

SKU: ES-DOB1645-01

Standout Features

Massive 16-inch Aperture

406mm mirror gathers 2,400+ times more light than the naked eye for breathtaking views.

Tool-Free Transport & Setup

Truss tube design disassembles easily for compact transport and quick assembly.

Precision Focus & Smooth Motion

2" helical focuser with 10:1 fine focus and optimized altitude bearings for smooth tracking.

Fast Cooling & Enhanced Viewing

Dual radial mirror fans and soft light baffle promote rapid thermal equilibrium and reduce stray light.

Product Specifications

Item Number: ES-DOB1645-01
f/ratio: f/4.5
Focal length: 1,826 mm
Primary mirror diameter: 40.9 cm
Secondary obstruction: 25%
Mirror cell support points: 9
Truss pole length: 140 cm
Truss pole diameter: 25 mm
Secondary cage assembly diameter: 48 cm OD
Secondary cage assembly weight: 8 pounds
Secondary cage assembly height: 17 cm
Mirror box/rocker box height: 42.5 cm
Mirror box weight: *66 pounds
Height to center of eyepiece at zenith: 167 cm
Theoretical limiting stellar magnitude: 0.29 arc sec
Theoretical Rayleigh limit: 0.34 arc sec
Theoretical limiting magnitude: 15.74 mag
Theoretical maximum magnification: 800x
*Mirror weight can vary because of the manufacturing process; these values are approximate