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GSO Dobson N 406/1829 Truss DOB Telescope
Using an open truss structure, the GSO Dobson N 406/1829 Truss DOB Telescope combines a 406mm parabolic primary mirror with 1829mm focal length and integrated cooling support.
- 406mm aperture provides 0.29-arcsecond resolution
- 1829mm focal length uses f/4.5 optics
- 2.0-inch focuser provides 10:1 adjustment
- Cooling fan and counterweights included
- 8×50 finder and tripod components included
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Description
Open-truss deep-sky capability defines the GSO Dobson N 406/1829 Truss DOB Telescope, a 16-inch parabolic Newtonian reflector with a 1829 mm focal length and listed f/4.5 optical ratio. Its carbon-fiber and aluminum truss structure uses a steel mirror box, 2-inch dual-speed Crayford focuser, 10:1 reduction, 12V boundary-layer cooling fans, GRP rocker guidance, 8×50 finder, wide-field and high-magnification eyepieces, extension core, and counterweight support.
The open-frame configuration is intended for large-aperture field deployment, with the mirror box, truss columns, upper cage, rocker base, and accessories handled as separate components. Setup requires deliberate assembly, collimation, balance, thermal preparation, and transport planning, while the cooling-fan module can be used during preparation to support airflow near the primary mirror before detailed observation at higher magnification.
Key Features of GSO Dobson N 406/1829 Truss DOB Telescope
This 16-inch truss Dobsonian combines a 406 mm parabolic Newtonian mirror with an 1829 mm focal length, f/4.5 optical ratio, carbon-fiber and aluminum frame, 2-inch dual-speed Crayford focuser, 10:1 reduction, cooling fans, GRP guidance, 8×50 finder, and supplied eyepieces.
- 406 mm parabolic Newtonian reflector
- 1829 mm focal length with listed f/4.5 optical ratio
- Open carbon-fiber and aluminum truss construction
- 2-inch dual-speed Crayford focuser
- 10:1 micro-gear reduction
- 12V boundary-layer cooling fan array
- 8×50 finder and GRP radial tracking layers
- 30 mm Erfle, 9 mm Super Plossl, and extension core
Large-Aperture Manual Deep-Sky Observation
The supplied application focuses on faint galaxies, nebulae, clusters, lunar features, and planetary structures, with the 406 mm aperture supporting the listed observatory-scale visual role while the truss design allows component-based transport and the rocker base provides direct manual tracking without computerized or motorized positioning.
Why Choose GSO Dobson N 406/1829 Truss DOB Telescope
The 16-inch truss configuration is relevant when maximum visual aperture, open-frame transport, active mirror cooling, 10:1 focusing, large-finder support, and manual deep-sky tracking are more important than compact setup, electronic alignment, or a permanently assembled telescope that can be moved as one piece.
- 406 mm aperture for the listed faint-target application
- Truss structure separates for transport and field assembly
- Cooling fans, Crayford focuser, finder, eyepieces, extension, and rocker base included
GSO 2-Year Limited Warranty
The supplied product information lists a 2-year limited warranty for this Dobsonian telescope, and the applicable regional warranty terms, mirror coverage, truss hardware coverage, focuser coverage, cooling-fan coverage, rocker-box coverage, registration requirements, and authorized service process should be confirmed before purchase because the system’s size and multi-part assembly require careful handling and storage.
GSO Dobson N 406/1829 Truss DOB Telescope Specs
| Brand | GSO (Guan Sheng Optical) |
| Full Model Code | GSO 16-inch f/4.5 Professional Truss-Tube Dobsonian Telescope |
| Country of Origin | Taiwan |
| Optical Design | Newtonian Dobsonian (Parabolic Primary Mirror) |
| Aperture | 406 mm (15.98 inches) |
| Focal Length | 1829 mm |
| Focal Ratio | f/4.5 |
| Optical Coatings | Enhanced 94% Aluminum Reflectivity Coating Matrix with Quartz Overcoat Protection |
| Glass Material | Premium Low-Expansion Parabolic BK7 Glass Core |
| Secondary Mirror Obstruction | 88 mm |
| Secondary Mirror Obstruction by Diameter | 21.7% |
| Secondary Mirror Obstruction by Area | 4.7% |
| Resolving Power | 0.29 Arcseconds (Dawes), 0.34 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 15.0 |
| Highest Useful Magnification | 812x |
| Lowest Useful Magnification | 58x |
| Optical Tube Material | Open-Frame Carbon Fiber and Aluminum Truss Construction with Steel Mirror Box Base |
| Focuser Style & Mechanism | 2.0-inch Dual-Speed Crayford Focuser with 10:1 Micro-Gear Reduction System and Brass Compression Rings |
| Mirror Lock Mechanism | No (Flotation Mirror Cell Support Architecture with 12V Boundary Layer Cooling Fan Array) |
| Optical Tube Dimensions | Truss Construction (Mirror Box: 540 mm x 540 mm x 480 mm) |
| Optical Tube Weight | 33.00 kg (72.75 lbs) - Mechanical Structural Assembly Total |
| Mount Attachment Type | Heavy-Duty Laminated Rocker Box Base with Large Segment Altitude Trunnions and Teflon Guides |
| Finder Scope Specification | 8x50 Achromatic Optical Finder Scope with Quick-Release Base |
| Included Accessories | 10:1 Dual-Speed Focuser, Erfle 30mm Wide-Field Eyepiece (2-inch / 61x), Super Plossl 9mm Eyepiece (1.25-inch / 203x), Integrated Battery Cooling Fan Module, 35mm Extension Core |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Observatory-scale deep-sky resolve tracking and faint planetary structure capturing, deploying a massive 16-inch aperture array inside an open truss configuration to pull weak starlight metrics. |
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