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Celestron SC 235/2350 EdgeHD 925 Cassegrain OTA Specs
| Brand | Celestron |
| Full Model Code | Celestron EdgeHD 9.25-inch Optical Tube Assembly (91030-XLT) |
| Country of Origin | United States / China |
| Optical Design | EdgeHD (Aplanatic Schmidt-Cassegrain with Integrated Doublet Field Flattener) |
| Aperture | 235 mm (9.25 inches) |
| Focal Length | 2350 mm |
| Focal Ratio | f/10 |
| Optical Coatings | Premium StarBright XLT High-Transmission Coatings |
| Secondary Mirror Obstruction | 85 mm |
| Secondary Mirror Obstruction by Diameter | 36% |
| Secondary Mirror Obstruction by Area | 13% |
| Resolving Power | 0.49 Arcseconds (Dawes), 0.59 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 14.4 |
| Highest Useful Magnification | 555x |
| Lowest Useful Magnification | 34x |
| Optical Tube Material | Aluminum |
| Focuser Style & Mechanism | Internal Primary Mirror Focus Assembly with Two Mirror Support Clutches and Integrated Mesh Louver Vents |
| Mirror Lock Mechanism | Yes (Dual Tension Knobs locking the primary mirror to the rear cell) |
| Optical Tube Dimensions | 271.78 mm x 559 mm |
| Optical Tube Weight | 9.53 kg (21.0 lbs) |
| Mount Attachment Type | Full-Length Losmandy CGE Style Dovetail Bar Profile |
| Finder Scope Specification | 9x50 Optical Finder Scope with Bracket |
| Included Accessories | 23mm Luminos 2-inch Eyepiece (102x), 2-inch Mirror Diagonal with 1.25-inch Adapter, CGE Dovetail Rail |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Standalone premium aplanatic core optimized for wide-field sensor tracking and coma-free deep sky imaging, deploying internal flattening glass metrics to uniform focus boundaries across the entire focal plane. |
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