- Description
- Specifications
The Sky-Watcher Classic 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.
| SKU | S11610 |
| UPC | 050234116107 |
| Optical Info | |
|---|---|
| Optical Design | Newtonian |
| Mirror Coatings | 94% Aluminum |
| Glass Type | Borosilicate |
| True Aperture (mm) | 257 |
| Primary Aperture (mm) | 203 |
| F/Ratio | 5.9 |
| Focal Length (mm) | 1200 |
| Secondary Diameter | 48mm |
| Secondary Obstruction (by diameter) | 24% |
| Secondary Obstruction by Area | 6% |
| Observational Info | |
| Dawes Limit | 0.57 |
| Rayleigh Limit | 0.69 |
| Limiting Mag. | 14 |
| Minimum Magnification | 29 |
| Maximum Magnification | 400 |
| Light Gathering (compared to next size down) | 78% |
| General Info | |
| Focuser | 2" Crayford |
| OTA Length (Retract/Ext.) | 43" |
| OTA Outer Diameter | 9.375" |
| OTA Weight (with accessories) | 20 |
| Dob Base Weight | 25 |
| Dob Base Measurements | 29"x20.5" |
| Zenith Eyepiece Height | 45" |
| Accessories | |
| Included Finder | 9x50 Finder |
| Included Diagonal | No |
| Included Eyepieces | 25/10 Super (modified Kellner) |
| Magnification w/ Included Eyepieces | 48x/120x |
| Included Case | No |
| Corrector | No |
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