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Celestron EdgeHD-SC 203/2032 Cassegrain OTA
Designed as a flat-field optical tube, the Celestron EdgeHD-SC 203/2032 Cassegrain OTA combines a 203.2mm EdgeHD Schmidt-Cassegrain system with 2032mm focal length and Fastar compatibility.
- 203.2mm aperture provides 0.57-arcsecond resolution
- 2032mm focal length uses f/10 optics
- Fastar and HyperStar compatibility is specified
- 40mm eyepiece and Vixen rail included
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Description
Corrected-field imaging is the central purpose of the Celestron EdgeHD-SC 203/2032 Cassegrain OTA, an 8-inch EdgeHD aplanatic Schmidt-Cassegrain optical tube featuring a 203.2 mm aperture, 2032 mm focal length, and listed f/10 optical ratio. The OTA uses StarBright XLT coatings, an aluminum tube, internal primary-mirror focusing, dual mirror clamps, Fastar and HyperStar compatibility, a 9×50 finder, 40 mm eyepiece, star diagonal, and CG-5 dovetail rail.
The verified EdgeHD configuration is supplied as a standalone optical tube assembly, so the mount, tripod, tracking electronics, counterweights, power supply, and imaging camera must be selected separately. Its optical system is designed around field correction and compatibility with optional focal-reduction or Fastar-related accessories, while the internal focus mechanism and mirror clamps support the supplied visual and imaging-oriented configuration.
Key Features of Celestron EdgeHD-SC 203/2032 Cassegrain OTA
This standalone 8-inch EdgeHD optical tube combines aplanatic Schmidt-Cassegrain optics, StarBright XLT coatings, 2032 mm native focal length, Fastar and HyperStar compatibility, internal focusing, mirror clamps, 9×50 finder, and CG-5 mounting hardware.
- 203.2 mm EdgeHD Schmidt-Cassegrain aperture
- 2032 mm focal length with listed f/10 optical ratio
- Premium StarBright XLT coatings
- Fastar and HyperStar compatible design
- Internal primary mirror focusing
- Dual mechanical mirror clamps
- 9×50 optical finder scope
- CG-5 dovetail bar and 40 mm eyepiece
Standalone Flat-Field Optical Configuration
The supplied application is a standalone optical assembly for lunar, planetary, deep-sky, and compatible imaging configurations, while final tracking behavior, mount compatibility, payload support, power requirements, camera connection, and operational stability depend on the separately selected mount, tripod, counterweights, adapters, and other telescope system components.
Why Choose Celestron EdgeHD-SC 203/2032 Cassegrain OTA
This model is a suitable choice when a buyer wants an 8-inch EdgeHD optical tube with StarBright XLT coatings, long native focal length, Fastar and HyperStar compatibility, internal focusing, mechanical mirror clamps, 2-inch-class imaging potential, and a CG-5 dovetail interface for a compatible mount.
- EdgeHD optical design with the listed f/10 native configuration
- Fastar and HyperStar compatibility for optional alternate imaging setups
- Finder, eyepiece, diagonal, mirror clamps, and dovetail rail included
Celestron 2-Year Limited Warranty
The supplied product information lists a 2-year limited warranty for this optical tube assembly, and buyers should confirm the current US warranty terms, optical coverage, focusing mechanism coverage, mirror clamp coverage, included accessory coverage, registration requirements, and authorized service process before purchasing a mount or imaging system separately.
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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