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Celestron S 203/400 RASA 800 CGX GoTo Specs
| Brand | Celestron |
| Full Model Code | Celestron RASA 8 CGX Computerized Telescope System (12058) |
| Country of Origin | United States / China |
| Optical Design | Rowe-Ackermann Schmidt Astrograph (4-Element Rare-Earth Lens Group with Spherical Primary Mirror) |
| Aperture | 203 mm (8.0 inches) |
| Focal Length | 400 mm |
| Focal Ratio | f/2.0 |
| Optical Coatings | StarBright XLT Reflective and Anti-Reflective Multi-Coatings with Broadband AR Lens Coatings |
| Central Obstruction Diameter | 93 mm |
| Central Obstruction by Diameter | 46% |
| Central Obstruction by Area | 21% |
| Resolving Power | 0.57 Arcseconds (Dawes), 0.68 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | Not Applicable (Pure Imaging Instrument) |
| Highest Useful Magnification | Not Applicable (No Visual Eyepiece Support) |
| Lowest Useful Magnification | Not Applicable (No Visual Eyepiece Support) |
| Optical Tube Material | Aluminum |
| Focuser Style & Mechanism | Ultra-Stable Focus System (USFS) with Precision Linear Ball Bearings Counteracting Focus Shift |
| Mirror Lock Mechanism | No |
| Optical Tube Dimensions | 235 mm x 628 mm |
| Optical Tube Weight | 7.70 kg (17.0 lbs) - Tube Only |
| Mount Attachment Type | CGX Heavy-Duty Motorized German Equatorial Mount with Dual Setting Circles and Spring-Loaded Worm Gears |
| Finder Scope Specification | Not Included |
| Included Accessories | M42 Camera Adapter, C-Thread Camera Adapter, 12V Fan Battery Core, CGX Equatorial Head, Heavy-Duty Steel Tripod (2-inch Legs), NexStar+ Hand Controller, 2x 5.0kg Counterweights, 8mm Allen Wrench, DC Power Cable |
| Power Requirements | 12V DC, 4.0 Amps |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Heavy-duty computerized deep space observation, matching a high-speed f/2.0 multi-element correction lens core to a spring-loaded coordinate tracking frame to eliminate positional gear backlash during remote capture. |
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