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Vixen R200SS N 200/800 OTA Specs
| Brand | Vixen |
| Full Model Code | Vixen R200SS Fast Newtonian Reflector Optical Tube Assembly |
| Country of Origin | Japan (Design, Engineering, Mirror Polishing, and Quality Control Oversight) |
| Optical Design | Newtonian Reflector (Parabolic Primary Mirror paired with an optimized flat secondary diagonal mirror setup) |
| Aperture | 200 mm (7.87 inches) |
| Focal Length | 800 mm |
| Focal Ratio | f/4.00 |
| Optical Coatings | Vixen State-of-the-Art Dielectric Mirror Coatings engineered for maximum light throughput and exceptional durability |
| Glass Material | Premium Grade Japanese Borosilicate Glass substrate optimized for minimal thermal expansion and long-term focal stability |
| Secondary Mirror Obstruction | 62 mm (Minor axis width footprint profile of the interior diagonal spider mirror) |
| Secondary Mirror Obstruction by Diameter | 31.0% |
| Secondary Mirror Obstruction by Area | 9.61% |
| Resolving Power | 0.58 Arcseconds (Dawes), 0.70 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 13.3 |
| Highest Useful Magnification | 400x |
| Lowest Useful Magnification | 29x |
| Optical Tube Material | Rigid Roll-Formed Steel Main Tube built with an internal matte-black anti-reflection wall finish |
| Focuser Style & Mechanism | 60mm Heavy-Duty Rack and Pinion Focuser featuring dual control wheels and dual-point manual lock screws |
| Mirror Lock Mechanism | No (Equipped with standard manual structural mechanical cell adjustment screws) |
| Optical Tube Dimensions | 232 mm x 700 mm (Tube Outer Diameter x Working Longitudinal Structural Chassis Layout) |
| Optical Tube Weight | 5.30 kg (11.68 lbs) (Total weight rating inclusive of standard CNC tube rings and Vixen-style dovetail bar assembly) |
| Mount Attachment Type | Dual Vixen Tube Rings connected to a standard universal Vixen-Style GP-Level Dovetail Plate Frame |
| Finder Scope Specification | Optional (Pre-drilled structural rear block base ready to accept standard Vixen quick-release shoe modules) |
| Included Accessories | 200mm Fast Newtonian Optical Tube, Dual Tube Rings, Vixen Dovetail Plate, 1.25-inch Eyepiece Adapter Port |
| Standard Warranty | 1-Year Limited Warranty |
| Application | High-speed wide-field deep-sky astrophotography, leveraging an ultra-fast f/4 light path to capture weak nebula structures with short exposure frames. |
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