Sky-Watcher Quattro 200P Imaging Newtonian 8" (205 mm)

Sky-Watcher Quattro 200P Imaging Newtonian 8" (205 mm) Sky-Watcher SKU: S11210 | Helix SKU: CTS11210 Overview The new Sky-Watcher Quattro Imaging Newtonian with dual-speed focuser incorporates a superb mirror-set with two significant advantages over competing products. A 2" dual-speed 10:1 ratio focuser is included for excellent focusing precision. Additionally, the tube length has been slightly shortened to optimize performance for prime-focus photography. Specifications: SKU S11210 UPC 050234112109 Optical Info Optical Design Newtonian Mirror Coatings 94% Aluminum Glass Type Borosilicate Primary Aperture (mm) 203 F/Ratio 4 Focal Length (mm) 800 Secondary Diameter 70mm Secondary Obstruction (by diameter) 34% Secondary Obstruction by Area 12% 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