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Tecnosky AP 130/900 SLD OWL Triplet OTA Specs
| Brand | Tecnosky |
| Full Model Code | Tecnosky AP 130/900 Super-Low Dispersion OWL Series Triplet Apochromatic Refractor Optical Tube Assembly |
| Country of Origin | Italy (Design) / Japan (Ohara Glass Sourcing Integration Layout) |
| Optical Design | Apochromatic Refractor (3-Element Air-Spaced Objective Triplet Layout featuring a central FPL-53 element flanked by Lanthanum and low-dispersion optical components) |
| Aperture | 130 mm (5.11 inches) |
| Focal Length | 900 mm |
| Focal Ratio | f/6.92 |
| Optical Coatings | Premium Ultra-Wideband Multi-Coated Broad-Band Layers applied directly to all glass interfaces |
| Glass Material | Genuine Ohara FPL-53 Glass Substrate matched with custom Lanthanum and low-dispersion components inside a highly stable thermal housing cell |
| Secondary Mirror Obstruction | 0 mm (Unobstructed Optical Path Setup) |
| Secondary Mirror Obstruction by Diameter | 0% |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 0.89 Arcseconds (Dawes), 1.07 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 12.4 |
| Highest Useful Magnification | 260x |
| Lowest Useful Magnification | 19x |
| Optical Tube Material | Lightweight Structural Aluminum Main Tube fitted with high-density internal stray-light suppression baffles |
| Focuser Style & Mechanism | Large Heavy-Duty Geared Rack and Pinion Focuser Unit with integrated manual field rotator, 1:10 micro-reduction assembly, and 2-inch self-centering click-lock target clamp block components |
| Mirror Lock Mechanism | No (Equipped with standard manual drawtube tension locks) |
| Optical Tube Dimensions | 140 mm x 780 mm (Tube Outer Diameter x Retracted Transport State Length) |
| Optical Tube Weight | 8.50 kg (18.74 lbs) (Bare Optical Tube Assembly with Clamps) |
| Mount Attachment Type | CNC-Machined Tube Clamps linked to a Universal Vixen-Style Dovetail Mounting Plate Frame |
| Finder Scope Specification | Pre-drilled accessory mounting block configured for universal finder base attachment |
| Included Accessories | 130mm OWL Triplet Lens Cell, Retractable Dew Shield, Large Geared Focuser, Click-Lock Reducer, CNC Clamps, Vixen Dovetail, Interferometric Test Certificate (Strehl > 0.95 benchmark metric verification) |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Elite deep-sky astrophotography campaigns, delivering flawless pinpoint color correction across demanding multi-wavelength imaging runs. |
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