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TeleVue AP 76/480 TV-76 OTA Specs
| Brand | TeleVue Optics |
| Full Model Code | TeleVue AP 76/480 TV-76 Series Apochromatic Refractor Optical Tube Assembly |
| Country of Origin | United States of America (Manufactured) |
| Optical Design | Apochromatic Refractor (2-Element Air-Spaced Objective Doublet layout with low dispersion properties) |
| Aperture | 76 mm (2.99 inches) |
| Focal Length | 480 mm |
| Focal Ratio | f/6.32 |
| Optical Coatings | Proprietary TeleVue Ultra-High Transmission Multi-Coated Layers on all air-to-glass boundaries |
| Glass Material | Premium Japanese Ohara or equivalent High-Performance Extra-Low Dispersion Glass element paired with matching substrate matrix |
| Secondary Mirror Obstruction | 0 mm (Unobstructed Optical Path Setup) |
| Secondary Mirror Obstruction by Diameter | 0% |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 1.52 Arcseconds (Dawes), 1.82 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 11.9 |
| Highest Useful Magnification | 200x |
| Lowest Useful Magnification | 11x |
| Optical Tube Material | Heavy-Duty Powder-Coated Aluminum Main Tube lined with high-efficiency internal stray-light trapping flocking |
| Focuser Style & Mechanism | 2-inch Heavy-Duty Rack and Pinion Focuser Unit featuring a 10:1 Focusmate Dual-Speed Micro-Focus Reduction System |
| Mirror Lock Mechanism | No (Equipped with non-marring internal drawtube tension clamp locks) |
| Optical Tube Dimensions | 82 mm x 368 mm (Tube Outer Diameter x Retracted Dew Shield Operating Length) |
| Optical Tube Weight | 2.31 kg (5.10 lbs) (Bare Optical Tube Assembly baseline configuration weight) |
| Mount Attachment Type | Compatible with standard TeleVue Clamshell Ring modules linked to universal mounting plates |
| Finder Scope Specification | Focuser housing tracks pre-drilled to accommodate quick-release finder bracket shoes |
| Included Accessories | 76mm Apochromatic Objective Cell, Sliding Metal Dew Shield, Screw-on Metal Lens Cover, Focusmate 10:1 Focuser, Soft Padded Carry Case |
| Standard Warranty | 5-Year Manufacturer Warranty |
| Application | High-contrast mobile wide-field astronomy campaigns and elite spotting tracking runs, outputting a 5.5-degree maximum field profile without false color distortion. |
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