Sky-Watcher Classic 200P Dobsonian Telescope

Sky-Watcher Classic 200P Dobsonian Telescope Sky-Watcher SKU: S11610 | Helix SKU: CTS11610 Overview 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. Specifications: 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 Ma