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Omegon Pro RC 355/2845 Truss Ritchey-Chretien OTA Specs
| Brand | Omegon Pro |
| Full Model Code | Omegon Pro RC 355/2845 Truss Open-Frame Ritchey-Chrétien Optical Tube Assembly |
| Country of Origin | Germany (Designed) / China (Manufactured) |
| Optical Design | Ritchey-Chrétien (Hyperbolic Primary Mirror Layout with Hyperbolic Secondary Mirror) |
| Aperture | 355 mm (13.98 inches) |
| Focal Length | 2845 mm |
| Focal Ratio | f/8 |
| Optical Coatings | Enhanced Multi-Layer Aluminum Coating Matrix Achieving 94% Enhanced Reflectivity Levels |
| Glass Material | Premium Quartz Mirror Substrates featuring Near-Zero Thermal Expansion Coefficients |
| Secondary Mirror Obstruction | 169 mm |
| Secondary Mirror Obstruction by Diameter | 47.61% |
| Secondary Mirror Obstruction by Area | 22.66% |
| Resolving Power | 0.33 Arcseconds (Dawes), 0.39 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 14.6 |
| Highest Useful Magnification | 710x |
| Lowest Useful Magnification | 51x |
| Optical Tube Material | Open Truss Architecture comprising Carbon Fiber Rods mated to CNC-Machined Aluminum Clamping Blocks |
| Focuser Style & Mechanism | 3-inch Heavy-Duty Dual-Speed Rack and Pinion Focuser with 360-degree Field Rotator Interface |
| Mirror Lock Mechanism | Yes (Primary Mirror Cell Decoupled from Focuser Base / Precision Push-and-Pull Collimation Hardware) |
| Optical Tube Dimensions | 490 mm x 1030 mm |
| Optical Tube Weight | 31.00 kg (68.34 lbs) |
| Mount Attachment Type | Dual Heavy Losmandy-Style Universal Dovetail Plate Bars Fixed to Core Structural Rings |
| Finder Scope Specification | Not Included / Equipped with Dual Quick-Release Mounting Base Brackets for Autoguider Hardware |
| Included Accessories | 355mm Truss RC OTA, 3-inch Heavy-Duty R&P Focuser, Dual Losmandy Plates, Stray Light Fabric Shroud, Focuser Extension Ring Set, 2-inch and 1.25-inch Step-Down Collar Blocks |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Research-grade narrow-band deep-space astrograph installations, gathering extensive faint star data sets with a massive 14-inch open-cell configuration optimized against aerodynamic tube loading. |
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