Description
Product Description
Quick Overview
- 8” (203 mm) Dobsonian-style Newtonian
- 1200 mm focal length (f/5.9)
- 2” single-speed Crayford-style focuser with 1.25” adaptor
- 4-element Plössl 25 mm and 10 mm 1.25” eyepieces
- 9×50 finderscope
- Solid rocker-mount with Teflon bearings and tension clutch for altitude
- Teflon bearing for azimuth
The Sky-Watcher Traditional Dobsonian Telescope 203mm/1200mm (8″) has a “paraboloidal” primary mirror to eliminate spherical aberration and a four-arm, secondary- mirror bracket with fine supports (0.5mm thick), to reduce diffraction spikes and light loss. In addition, this model include a 2″ focuser with a 1.25″ adapter, allowing the use of either eyepiece size. This model also include the new feature-tension control handle.
| Optical Design | Newtonian Reflector |
|---|---|
| Field Flattener | No |
| Aperture (mm) | 203 mm (8 in) |
| Focal Length | 1200 mm |
| Focal Ratio | f/5.9 |
| Focal Length of Eyepiece 1 (mm) | 25 mm |
| Magnification of Eyepiece 1 | No |
| Focal Length of Eyepiece 2 (mm) | 10 mm |
| Magnification of Eyepiece 2 | No |
| Finderscope | 9×50 |
| Diagonal | No |
| Tube Rings | No |
| Mount Type | No |
| Saddle Type | No |
| Mounting Threads | No |
| Motor Drive | No |
| Tracking Rates | No |
| Power | No |
| Payload | No |
| Mount Weight | No |
| Highest Useful Magnification | 406x |
| Lowest Useful Magnification | No |
| Limiting Stellar Magnitude | 14.2 |
| Resolution (Rayleigh) | No |
| Resolution (Dawes) | No |
| Light Gathering Power (Compared to human eye) | No |
| Optical Coatings | No |
| Fully Illuminated Field | No |
| Optical Tube Length | No |
| Optical Tube Weight | No |
