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Celestron SC 203/2032 C8 Cassegrain OTA Specs
| Brand | Celestron |
| Full Model Code | Celestron C8 Optical Tube Assembly (91020-XLT / 91030-XLT) |
| Country of Origin | United States / China |
| Optical Design | Schmidt-Cassegrain (Catadioptric Core) |
| 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 Focus Assembly |
| Mirror Lock Mechanism | No (Fastar and HyperStar Compatible) |
| Optical Tube Dimensions | 238 mm x 432 mm |
| Optical Tube Weight | 5.67 kg (12.5 lbs) |
| Mount Attachment Type | Available with CG-5 Vixen-Style or CGE Losmandy-Style Dovetail Bar Profiles |
| Finder Scope Specification | 6x30 Optical Finder Scope with Bracket |
| Included Accessories | 25mm Plossl Eyepiece (81x), 90-Degree Star Diagonal (1.25-inch), 1.25-inch Visual Back, Dovetail Mounting Bar |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Portable optical collector module for high-contrast planetary monitoring and deep sky inspection, delivering an f/10 catadioptric beam path adaptable to variable consumer platform rails. |
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