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Skywatcher N 300/1200 Quattro-12S OTA Specs
| Brand | Sky-Watcher |
| Full Model Code | Sky-Watcher Quattro-300P Parabolic Newtonian Dual-Speed Astrograph Steel Optical Tube Assembly |
| Country of Origin | China (Manufactured) |
| Optical Design | Newtonian Reflector (Parabolic Primary Mirror Layout with Planar Secondary Mirror) |
| Aperture | 300 mm (11.81 inches) |
| Focal Length | 1200 mm |
| Focal Ratio | f/4 |
| Optical Coatings | High-Reflectivity Dielectric Mirror Coating Layers reaching 94% transmission benchmarks |
| Glass Material | Premium Optical Borosilicate Glass Substrate maintaining geometric integrity over thermal changes |
| Secondary Mirror Obstruction | 90 mm |
| Secondary Mirror Obstruction by Diameter | 30.00% |
| Secondary Mirror Obstruction by Area | 9.00% |
| Resolving Power | 0.39 Arcseconds (Dawes), 0.46 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 15.0 |
| Highest Useful Magnification | 600x |
| Lowest Useful Magnification | 43x |
| Optical Tube Material | Roll-Formed Sheet Steel Optical Tube Cylinder Finished in Starry-Black Metallic Diamond Coat |
| Focuser Style & Mechanism | 2-inch Dual-Speed Linear Power Focuser Unit featuring 10:1 Micro-Focus Reduction Gear Drive and reinforced roller rails |
| Mirror Lock Mechanism | No (Equipped with standard manual spring-tensioned cell adjustment bolts) |
| Optical Tube Dimensions | 355 mm x 1110 mm |
| Optical Tube Weight | 23.00 kg (50.71 lbs) |
| Mount Attachment Type | Cast Aluminum Support Tube Rings attached to a standard heavy Losmandy-style wide dovetail rail tracking system |
| Finder Scope Specification | 8x50 Optical Straight-Through Finder Scope Kit Complete with O-Ring Alignment Bracket |
| Included Accessories | 300mm f/4 Astrograph Steel OTA, Tube Rings, Losmandy-Style Dovetail, 8x50 Finder, 2-inch Dual-Speed Focuser Assembly |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Elite observatory-level high-speed astrophotography, leveraging a massive fast f/4 reflection matrix to record wide-field deep-space targets with precision. |
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