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Omegon Pro RC 203/1624 Ritchey-Chretien OTA Specs
| Brand | Omegon Pro |
| Full Model Code | Omegon Pro RC 203/1624 Ritchey-Chrétien Reflector Optical Tube Assembly |
| Country of Origin | Germany (Designed) / China (Manufactured) |
| Optical Design | Ritchey-Chrétien (Hyperbolic Primary Mirror Layout with Hyperbolic Secondary Mirror) |
| Aperture | 203 mm (7.99 inches) |
| Focal Length | 1624 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 | 95 mm |
| Secondary Mirror Obstruction by Diameter | 46.80% |
| Secondary Mirror Obstruction by Area | 21.90% |
| Resolving Power | 0.57 Arcseconds (Dawes), 0.68 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 13.3 |
| Highest Useful Magnification | 406x |
| Lowest Useful Magnification | 29x |
| Optical Tube Material | Roll-Formed Heavy-Gauge Steel Cylinder Shell with Internal Optical Anti-Reflection Stray Light Baffles |
| Focuser Style & Mechanism | 2-inch Crayford Precision Friction Drive Focuser with Linear Guide Rail and 1:10 Micro-Gear Reduction |
| Mirror Lock Mechanism | Yes (Fixed Mirror Substrate Cell Layout Inapplicable to Shifting / Direct Collimation Retention Screws) |
| Optical Tube Dimensions | 230 mm x 580 mm |
| Optical Tube Weight | 7.50 kg (16.53 lbs) |
| Mount Attachment Type | Dual Vixen and Losmandy-Style Dovetail Rails Fastened to Top and Bottom Tube Walls |
| Finder Scope Specification | Not Included / Equipped with Dual Quick-Release Mounting Base Brackets for Autoguider Hardware |
| Included Accessories | 203mm RC OTA, Losmandy Dovetail Bar, Vixen Dovetail Bar, 2-inch Linear Guide Focuser, Two 25mm Focuser Extension Tubes, One 50mm Focuser Extension Tube |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Mid-aperture astro-imaging setups prioritizing absolute field flatness, avoiding thermal focus drift by utilizing an upgraded low-expansion quartz mirror foundation array. |
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