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Celestron 36cm RASA v2 - OTA Only
The Celestron 36cm RASA v2 is the ideal astrograph designed for space surveillance and scientific applications. It has a 36cm aperture and a breakthrough f/2.2. It's equipped with a 4-element lens group made of ED glass for images free from chromatic aberration, coma and field curvature. This is a ideal choice for astroimaging.
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A premium astrograph
The Celestron 36cm RASA v2 is a high-performance astrograph designed for advanced wide-field astrophotography. Equipped with premium optics, it effectively eliminates field curvature, off-axis coma, and chromatic aberration thanks to the extra-low dispersion (ED) glass and flat focal plane. With its groundbreaking f/2.2 design and an extended spectral range of 400-900nm, it enables the detection of brighter signals by the camera, making it ideal for capturing stunning, high-quality images of the night sky.
Ultra-Stable Focus System
The RASA 36 v2 is equipped with the new Ultra-Stable Focus System (USFS), which minimises focus shift and mirror flop. Thanks to its precision linear ball bearing, this feature ensures there is no unwanted lateral movement of the primary mirror during focusing, providing a more stable and reliable imaging experience.
Features
- Coated with Celestron's proprietary XLT coatings for high light transmission.
- Built-in cooling fan cools the optics to ambient temperatures and prevents dust ingress by pulling the air through the vents.
- Dual dovetail bars allows you to mount optical tube and additional accessories
- 2x threaded insert holes in the rear for more mounting options
- 3x push-pull screws included
- M48 camera adapter included
Full Specifications
| Optical Design | Rowe-Ackermann Schmidt Astrograph (RASA) |
| Aperture | 355.6mm (14") |
| Focal Length | 790mm (31.1") |
| Focal Ratio | f/2.2 |
| Central Obstruction Diameter | 158mm (6.22")(44% of aperture diameter) |
| Optical Tube Construction | Aluminium |
| Resolution (Rayleigh) | 0.39 arc seconds |
| Resolution (Dawes) | 0.36 arc seconds |
| Light Gathering Power (Compared to Human Eye) | 2581X |
| Image circle | 60.1mm (2.36") Ø, 4.4° |
| Useable field | 70mm (2.75") Ø, 5.1°, only minimal performance loss at edge of FOV |
| Wavelength range | 400 – 900 nm |
| Back focus with included camera adapter | 55mm (2.16") |
| Back focus from top of threaded collar | 77.5mm (3.05") |
| Optical Coatings | Enhanced aluminum, XLT Multi-Coated throughout |
| Off-axis Illumination | 83% at 30mm (1.18") off-axis |
| Optical Tube Length | 1079.5mm (42.5") |
| Optical Tube Diameter | 406.4mm (16") |
| Focuser | Ultra-Stable Focus System (USFS), minimises lateral movement of primary mirror |
| Optical Tube Weight | 34.02kg |
| Dovetail | CGE Dovetail Bar |
| Other features | Ventilation fan, dual dovetail mounting bars |
| Included features | 48mm (1.89") camera adapter Fan battery pack |
About Celestron
Imagine a humble beginning – a 6-inch reflector telescope crafted by Tom Johnson for his young son. This was the spark that ignited a transformative journey. As time passed, his designs evolved into larger, more sophisticated scopes. Today, Celestron shines as an industry trailblazer, renowned for crafting precision optical equipment. From computerised marvels to traditional telescopes, binoculars, spotting scopes and more, Celestron's portfolio is a universe of possibilities. With a legacy spanning over 50 illustrious years, Celestron has earned admiration from both avid hobbyists and dedicated astronomers worldwide. But they don't rest on their laurels; innovation propels them forward. They constantly broaden their product horizons while illuminating minds through global science education initiatives. Celestron's story is one of innovation, evolution and a passion for the cosmos. Join them on this extraordinary journey of discovery and inspiration.
Product Code: 91078
| Optical Design | Rowe-Ackermann Schmidt Astrograph (RASA) |
|---|---|
| Aperture | 355.6mm (14") |
| Focal Length | 790mm (31.1") |
| Focal Ratio | 2.2 |
| Motor Drive | No |
| Dovetail Type | Celestron CGE Mount |
| Tube Length | 1079.5mm (42.5") |
| Autoguide Port | No |
| Electronic Hand Control | No |
| Warranty Information | 2 Years |