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Vixen ED80Sf AP 80/600 OTA Specs
| Brand | Vixen |
| Full Model Code | Vixen ED80Sf Apochromatic Refractor Optical Tube Assembly |
| Country of Origin | China (Manufacturing Execution) / Japan (Design and Technical Quality Audit Oversight) |
| Optical Design | Apochromatic Refractor (2-Element Air-Spaced ED Doublet Lens Layout) |
| Aperture | 80 mm (3.15 inches) |
| Focal Length | 600 mm |
| Focal Ratio | f/7.50 |
| Optical Coatings | Fully Multi-Coating (FMC) high-transmission coatings applied onto all air-to-glass lens surfaces |
| Glass Material | Premium Extra-Low Dispersion (ED) FPL-53 Glass substrate delivering high color-aberration correction metrics |
| Secondary Mirror Obstruction | 0 mm (Unobstructed Optical Path Setup) |
| Secondary Mirror Obstruction by Diameter | 0% |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 1.45 Arcseconds (Dawes), 1.73 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 11.3 |
| Highest Useful Magnification | 160x |
| Lowest Useful Magnification | 11x |
| Optical Tube Material | Rigid Roll-Formed Aluminum Main Tube fitted with protective internal contrast baffling walls |
| Focuser Style & Mechanism | 2-inch Heavy-Duty Dual-Speed Crayford Focuser with steel tracking guide rails and high-load independent manual lock knobs |
| Mirror Lock Mechanism | No (Equipped with standard manual structural mechanical lock screws) |
| Optical Tube Dimensions | 90 mm x 570 mm (Tube Outer Diameter x Working Longitudinal Structural Chassis Layout) |
| Optical Tube Weight | 3.40 kg (7.50 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 | 9x50 Achromatic Finder Scope module mounted on an adjustable secondary quick-release foot block |
| Included Accessories | 80mm ED Apochromatic Optical Tube, Dual Tube Rings, Vixen Dovetail Bar, 9x50 Finder Scope, Fitted Hard-Shell Aluminum Carrying Case |
| Standard Warranty | 1-Year Limited Warranty |
| Application | Core modular apochromatic optical assembly for visual field observers and digital deep-sky astroimaging setups looking for absolute color fidelity. |
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