Celestron 14″ F/2.2 Rowe-Ackermann Schmidt Astrograph V2 (OTA Only)(Celestron 14 F 2 2 Rowe Ackermann Schmidt Astrograph V2 Ota Only)
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Celestron 14″ Rowe-Ackermann Schmidt Astrogra… Overview
Representing the largest aperture in the RASA series, the Celestron 14″ f/2.2 Rowe-Ackermann Schmidt Astrograph is designed for photographing and imaging all kinds of celestial objects and for tracking space junk by Space Situational Awareness professionals. The use of four-element, extra-low dispersion optical glass lenses ensures accurate color rendition and eliminates aberrations such as coma and field curvatures. The improved StarBright XLT multicoating system, which includes antireflection coatings on the lenses and highly-reflective coatings on the mirrors, increases light transmission throughout the entire optical path. An integrated fan reduces cooldown time and provides optimal airflow through the optical tube assembly (OTA) while filtering harmful dust from the interior.
The astrograph design is defined by its fast focal ratio, which reduces exposure times without sacrificing image quality and gives you more time for multiple shots of the same object for layering or with different filters. Its internal Ultra-Stable Focus System enables very precise focusing to clearly resolve topographic details on the Moon or split double stars and reveal details of most other celestial objects in between, while minimizing unwanted lateral movement of the primary mirror when focusing or slewing. Since this OTA is designed as an imaging scope, it has a massive 2.36″ imaging circle that covers large imaging sensors such as those on medium-format cameras. A large, 48mm camera T-adapter is included for easy camera mounting.
- Large 14″ diameter aperture allows you to image dim deep-space objects
- 790mm focal length helps produce a fast focal ratio
- Fast f/2.2 focal ratio requires significantly lower exposure times versus slower ratios to produce the same results
- Rowe-Ackermann Schmidt astrograph (RASA) design is built for astrophotography and imaging performance (not recommended for visual use)
- Proprietary StarBright XLT fully multicoated optical system
- Four-element, extra-low dispersion glass lens group for true color rendition without aberrations across the entire field of view
- Wide 400-900nm spectral range improves images of deep space objects like galaxies and nebulae
- Extremely wide 2.36″ imaging circle will completely cover today’s larger camera sensors for full-frame images without vignetting
- Resolution: 0.39 arcsec (Rayleigh), 0.36 arcsec (Dawes)
- Back focus: 2.16″ with included camera adapter, 3.05″ from top of threaded collar
- Optical window can be removed and replaced with optional filters such as a light pollution filter
- Integrated cooling fan brings optical system to ambient air temperature for better performance
- Runs on eight user-supplied AA batteries or optional 12 VDC power adapter
- Multilayer mirror coatings made from layers of aluminum
- Multilayer antireflective lens coatings
- Ultra Stable Focus System moves primary mirror forward and back to achieve tack-sharp images
- Design minimizes unwanted lateral movement of the primary mirror when focusing or slewing
- Compatible with Celestron FocusMotor
- OTA only, mount and tripod required for proper use
- Includes large CGE/Losmandy-D dovetail plate for use on larger, more stable mount heads
- Secondary CGE/Losmandy-D dovetail plate located on top of OTA for easy mounting of accessories like guidescopes and imaging gear
- Weight: 75 pounds
Items Included
- Celestron 14″ f/2.2 Rowe-Ackermann Schmidt Astrograph V2 (OTA Only)
- 48mm T-Adapter
- Fan Battery Pack
- Limited 2-Year Manufacturer Warranty
Additional Resources
User Manual
5.3 MB
Celestron 14″ Rowe-Ackermann Schmidt Astrogra… Specs
| Optical Design |
RASA |
| Aperture |
356 mm / 14″ |
| Focal Length |
790 mm |
| Focal Ratio |
f/2.2 |
| Focuser |
Internal |
| Battery |
8x AA |
| Weight |
75 lb / 34 kg |
| Optical Design |
RASA |
| Aperture |
356 mm / 14″ |
| Focal Length |
790 mm |
| Focal Ratio |
f/2.2 |
| Resolution |
0.39 Arcsec (Rayleigh) 0.36 Arcsec (Dawes) |
| Focuser |
Internal |
| Diagonal |
No |
| Finderscope |
No |
| Mounting |
Losmandy Style |
| Optical Tube Dimensions |
42.5 x 16″ / 108 x 40.6 cm |
| Payload Capacity |
No |
| Altitude Adjustment |
No |
| Latitude Adjustment |
No |
| Counterweight |
No |
| Battery |
8x AA |
| Adapter |
12 VDC |
| Mobile App Compatible |
No |
| Weight |
75 lb / 34 kg |
| Package Weight |
124 lb |
| Box Dimensions (LxWxH) |
48 x 23.5 x 23″ |
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