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Celestron EdgeHD-SC 203/2032 Cassegrain OTA Specs
| Brand | Celestron |
| Full Model Code | Celestron C8-EdgeHD Optical Tube Assembly (C8-HD OTA) |
| Country of Origin | United States / China |
| Optical Design | EdgeHD Aplanatic Schmidt-Cassegrain (Flat-Field Catadioptric System) |
| Aperture | 203.2 mm (8.0 inches) |
| Focal Length | 2032 mm |
| Focal Ratio | f/10 |
| Optical Coatings | Premium StarBright XLT High-Transmission Coatings |
| Secondary Mirror Obstruction | 64 mm |
| Secondary Mirror Obstruction by Diameter | 31% |
| Secondary Mirror Obstruction by Area | 9.77% |
| Resolving Power | 0.57 Arcseconds (Dawes), 0.69 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 14.0 |
| Highest Useful Magnification | 480x |
| Lowest Useful Magnification | 29x |
| Optical Tube Material | Aluminum |
| Focuser Style & Mechanism | Internal Primary Mirror Focusing Mechanism supported by Pre-Loaded Ball Bearings (Fastar and HyperStar Compatible) |
| Mirror Lock Mechanism | Yes (Dual Mechanical Tension Clamps to Eliminate Long-Exposure Image Shift) |
| Optical Tube Dimensions | 238 mm x 432 mm |
| Optical Tube Weight | 6.35 kg (14.0 lbs) |
| Mount Attachment Type | CG-5 Dovetail Bar (Vixen Style Profile) |
| Finder Scope Specification | 9x50 Optical Finder Scope with Quick-Release Bracket |
| Included Accessories | 40mm Plossl Eyepiece (51x), 90-Degree Star Diagonal (1.25-inch), Vixen-Style CG-5 Dovetail Rail System, Primary Mirror Rear Ventilation Ports with Integrated Micro-Mesh Filters |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Standalone flat-field optical core optimized for zero-aberration astrophotography, delivering coma-free focal alignment across wide imaging sensors with an optional rapid transition to f/2 HyperStar configurations. |
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