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TeleVue AP 85/600 TV-85 OTA Specs
| Brand | TeleVue Optics |
| Full Model Code | TeleVue AP 85/600 TV-85 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 | 85 mm (3.34 inches) |
| Focal Length | 600 mm |
| Focal Ratio | f/7.05 |
| Optical Coatings | Proprietary TeleVue High-Transmission Multi-Coated Layer Matrix across all air-to-glass transitions |
| Glass Material | Premium High-Performance Extra-Low Dispersion Glass substrate combined with custom matching crown components for strict color correction control |
| Secondary Mirror Obstruction | 0 mm (Unobstructed Optical Path Setup) |
| Secondary Mirror Obstruction by Diameter | 0% |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 1.36 Arcseconds (Dawes), 1.63 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 12.1 |
| Highest Useful Magnification | 225x |
| Lowest Useful Magnification | 12x |
| Optical Tube Material | Precision Machined Powder-Coated Aluminum Body featuring internal light-trapping flocking paper and objective cell baffling |
| Focuser Style & Mechanism | 2-inch Heavy-Duty Rack and Pinion Focuser Unit featuring a 10:1 Focusmate Dual-Speed Micro-Focus Reduction System with integrated dual locking screws |
| Mirror Lock Mechanism | No (Equipped with internal non-marring split ring tension locks) |
| Optical Tube Dimensions | 90 mm x 485 mm (Tube Outer Diameter x Retracted Dew Shield Core Length) |
| Optical Tube Weight | 3.17 kg (7.00 lbs) (Baseline configuration weight including primary clamshell ring module) |
| Mount Attachment Type | TeleVue Clamshell Mounting Ring attached to universal base tracking patterns |
| Finder Scope Specification | Accessory channel brackets configured for direct TeleVue Starbeam or quick-release finder base insertion |
| Included Accessories | 85mm ED Doublet Objective Cell, Sliding Metal Dew Shield, Screw-on Metal Lens Cover, Focusmate Dual-Speed Focuser, TeleVue Clamshell Ring, Soft Padded Carry Case |
| Standard Warranty | 5-Year Manufacturer Warranty |
| Application | High-resolution lunar, planetary, and deep-sky visual exploration, balancing a highly compact structural footprint with sharp aperture field performance. |
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