Explore Scientific - Generation II - 16-inch Truss Tube Dobsonian Telescope - ES-DOB1645-01
$3,599.99
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6+ online ratings
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6+ online ratings
The summary star rating & review is based on aggregated reviews of this product across the web. It cannot be altered by the merchant and can be verified by emailing support@onereview.app.
What people like
The Explore Scientific Generation II 16-inch Truss Tube Dobsonian Telescope (ES-DOB1645-01) is a powerful and highly regarded deep-sky instrument known for its massive light-gathering capability (16-inch aperture) and surprisingly portable truss tube design. It's designed for dedicated visual observers seeking breathtaking views of galaxies, nebulae, and star clusters, with the fast f/4.5 focal ratio also suitable for high-magnification planetary and lunar observing. Users are consistently "blown away" by the immersive and detailed views, often noting sharp stars. The telescope breaks down into compact sections for transport and features a smooth Dobsonian mount with adjustable tension, a rear-mounted cooling fan, and a precise 2-inch focuser with 10:1 reduction. While generally praised for its optics and breakdown design, some users report minor quality control issues, particularly with the stock red dot finder and occasional balance issues with heavy eyepieces, sometimes necessitating counterweights or modifications. The manual could also be clearer for assembly.
Pros
Massive aperture: Excellent light gathering.
Breathtaking views: Deep sky and planetary.
Portable design: Breaks down for transport.
Easy assembly: Tool-free setup.
Stable mount: Smooth altitude/azimuth.
Precise focuser: 10:1 reduction.
Good optics: Sharp, high contrast.
Built-in cooling: Mirror fan included.
Lightweight: For its size.
Great value: Price for aperture.
Collimation easy: User-friendly.
Description
This is a Generation II telescope. All updates have been performed on this telescope. No telescope type has changed the hobby quite as much as the Dobsonian. Before the popularization of the Dobsonian by John Dobson, the vast majority of amateur telescopes consisted of small telescopes with primitive mechanics - barely enough to see the polar caps of Mars or the rings of Saturn. Larger telescopes, such as the Schmidt-Cassegrain were reserved for the wealthy. The ingenious combination of simple yet effective mechanisms with the greatest possible opening gives the Dobsonian telescope a unique triumphant march around the world. Nowhere do you get as much light for your money like a good Dobson. Disassembly of the scope without tools ensures a trouble-free transport of this great scope even in small cars. The entire structure has been optimized for maximum stiffness with minimal weight. The combination of high altitude bearings with optimized aluminum structures allows fine adjustment flows at high magnifications.
The ideal workhorse for the deep sky observers. A 406mm mirror collects more than 2,400 times as much light as the naked eye. Details on planets and deep sky objects will be visible even for inexperienced observers. Bright star clusters are resolved to the core, and the sight of the terminator on the moon is an unforgettable experience.
Includes 2" focuser with helical gearing and 10:1 reduction; LED Red Dot Finder, collimation assist tool; soft light baffle and two radial main mirror fan for fast temperature equilibrium.
The scope is ready for the use with our optional coma corrector.
Video
Specs
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
Warranty
Limited Warranty is one year, which converts to the Explore STAR Transferrable Product Warranty when product is registered within 60 days of purchase. Click Here to register.
Manual
To download printable PDF manual Click Here
Recommended Accessories: 12V Battery Power Supply for Dobsonians
CA Residents: Prop 65 WARNING(S)
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