Soon stocks will run out
Dont miss this opportunity while supplies last.
Celestron S 356/790 RASA 3600 Astrograph OTA
Designed for large-format imaging, the Celestron S 356/790 RASA 3600 Astrograph OTA combines a 355.6mm RASA optical system with 790mm focal length and f/2.22 imaging optics.
- 355.6mm aperture provides 0.33-arcsecond resolution
- 790mm focal length uses f/2.22 optics
- Dual dovetail bars support mount attachment
- M42, M48 adapters and cooling fans included
In Stock
Description
Observatory-scale wide-field imaging begins with the Celestron S 356/790 RASA 3600 Astrograph OTA, a 14-inch Rowe-Ackermann Schmidt Astrograph with a 790 mm focal length and listed f/2.22 optical ratio. This dedicated imaging tube uses StarBright XLT coatings, an Ultra-Stable Focus System, dual full-length dovetail bars, high-airflow cooling fans, M42 and M48 camera adapters, a protective front shield, and a large optimized image circle for compatible large-format sensor systems.
The RASA 36 is supplied as an optical tube assembly rather than a complete telescope system, so the mount, tripod, camera, filters, power source, guiding equipment, and imaging software must be selected separately. The system is designed for electronic imaging rather than visual observation, and final image quality, field illumination, focus stability, tracking, and sensor compatibility depend on the complete camera and mount configuration.
Key Features of Celestron S 356/790 RASA 3600 Astrograph OTA
This standalone astrograph combines a 356 mm Rowe-Ackermann Schmidt optical system with a 790 mm focal length, f/2.22 imaging format, StarBright XLT coatings, Ultra-Stable Focus System, large optimized image circle, dual dovetail mounting, cooling fans, and supplied camera adapters for professional imaging workflows.
- 356 mm Rowe-Ackermann Schmidt Astrograph
- 790 mm focal length with listed f/2.22 optical ratio
- StarBright XLT optical coatings
- Ultra-Stable Focus System
- Large optimized imaging circle
- Dual full-length CGE-style dovetail bars
- 42 mm and M48 camera adapters
- Dual high-airflow cooling fans and protective shield
Large-Format Deep-Sky Imaging
The supplied application focuses on wide-field deep-space imaging of galaxies, nebulae, clusters, and other extended targets across compatible large-format sensors, while final tracking accuracy, camera compatibility, field illumination, filter selection, calibration, and image results depend on the separately selected mount, camera, accessories, software, and observing conditions.
Why Choose Celestron S 356/790 RASA 3600 Astrograph OTA
This model is a suitable choice when a buyer needs a large 14-inch f/2.22 astrograph with StarBright XLT coatings, advanced focus stabilization, large-sensor imaging support, dual dovetail mounting, active cooling, supplied camera adapters, and an optical platform intended for specialized observatory or remote imaging configurations.
- Large 356 mm aperture for the listed imaging format
- Fast f/2.22 optical system with broad imaging circle
- Camera adapters, cooling fans, protective shield, and dovetail bars included
Celestron 2-Year Limited Warranty
The supplied product information lists a 2-year limited warranty for this optical tube assembly, while the current manufacturer listing provides separate RASA 36 technical and support information, so buyers should confirm the applicable US warranty terms, optical coverage, camera adapter coverage, cooling system coverage, registration requirements, and authorized service process before completing the imaging system.
Celestron S 356/790 RASA 3600 Astrograph OTA Specs
| Brand | Celestron |
| Full Model Code | Celestron Rowe-Ackermann Schmidt Astrograph 36cm (91077) |
| Country of Origin | United States / China |
| Optical Design | Rowe-Ackermann Schmidt Astrograph (4-Element Rare-Earth Lens Group with Spherical Primary Mirror) |
| Aperture | 355.6 mm (14.0 inches) |
| Focal Length | 790 mm |
| Focal Ratio | f/2.22 |
| Optical Coatings | StarBright XLT Reflective and Anti-Reflective Multi-Coatings with Broadband AR Lens Coatings |
| Central Obstruction Diameter | 163 mm |
| Central Obstruction by Diameter | 46% |
| Central Obstruction by Area | 21% |
| Resolving Power | 0.33 Arcseconds (Dawes), 0.39 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 | Custom Electronic Focus Mechanism Interface with Linear Internal Bearing Mechanics |
| Mirror Lock Mechanism | No (Stabilized via Internal USFS Bearing Mechanism) |
| Optical Tube Dimensions | 406.4 mm x 1016 mm |
| Optical Tube Weight | 38.56 kg (85.0 lbs) - Tube Only |
| Mount Attachment Type | Dual Top and Bottom CGE Full-Length Losmandy-Style Dovetail Bars |
| Finder Scope Specification | Not Included |
| Included Accessories | Custom M42 Camera Adapter, M48 Wide Camera Adapter, 12V DC Dual High-Airflow Cooling Fans, Protective Front Core Shield |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Observatory-scale full-frame sky tracking and remote deep space research imaging, deploying a massive 60mm optimized flat image circle across large industrial sensor arrays to record distant galaxy clusters. |
Reviews
There are no reviews yet.