Celestron CGX-L RASA 11 Telescope
Celestron CGX-L RASA 11 V2 Telescope
Rowe-Ackermann Schmidt Astrograph Features
Capturing impressive deep-sky astroimages is easier than ever with Celestron’s Rowe-Ackermann Schmidt Astrograph (RASA) V2, the perfect companion to today’s top DSLR or astronomical CCD cameras. This fast, wide-field f/2.2 system allows for shorter exposure times compared to traditional f/10 astroimaging, without sacrificing resolution. Because shorter sub-exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The short focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required.
RASA 11 V2 builds on the legacy of Celestron’s Schmidt Cameras, which allowed astrophotographers to produce images with much shorter exposure times on film in the 1970s.
Today, with CCD sensor sizes as large as film or larger, the RASA 11 V2 offers a 43.3mm optimized image circle to capture pinpoint stars on the largest imaging chips. Optical performance for huge sensors with diagonals of up to 52mm wide is still excellent.
Combine this large image circle with a focal length of just 620mm and you have an instrument suitable for wide-field imaging, creating huge mosaics of the night sky, surveying, and even comet hunting.
The RASA 11 V2 features optics with 4-element rare-earth glass for images free of false color and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle are unprecedented for an astrograph in this price range—or even that of a much more expensive instrument. The design also provides minimal vignetting.
RASA 11 V2 utilizes the new Ultra-Stable Focus System (USFS). At the heart of this system is a precision linear ball bearing. The bearing serves to minimize focus shift (unwanted lateral motion of the primary mirror during focusing which causes shifting of the image) and mirror flop (movement of the primary mirror when the telescope is pointing to different positions in the sky). The USFS is also compatible with the optional Celestron Focus Motor (#94155-A). The integrated 12V DC MagLev fan reduces cooldown time and provides optimal airflow through the dust filtered optical tube.
Engineered as a complete astroimaging system, every component of the RASA 11 V2 is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully-multicoated optical window or optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly. The Dovetail CGE bars on the top of the optical tube provides a connection for use of optional accessories like a guidescope.
CGX-L Mount Features:
Celestron's CGX-L computerized equatorial mount is the pinnacle of our fully computerized equatorial mount series. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is perfect for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes, imaging kits, and the latest in wireless tech accessories.
Key design goals included:
- larger 144mm diameter worm wheels, which provide smoother operation and can more accurately drive heavier loads
- a longer 270mm dovetail saddle to support larger optical tubes
- remote operation-friendly features such as home and limit optical sensors
- easier polar alignment adjustments
- improved cable management
In addition to achieving all these goals, we’ve made mechanical and ergonomic improvements throughout CGX-L to make the mount sturdier, easier to use, and easier to transport.
- 11'' (279mm) F/2.2
- F/10 Focal Ratio
- 620mm Focal Length
- Starbright XLT Multi-Coating
- 0.41 Arc Seconds Resolution
- 1588X Light Gathering Power
- 12% Secondary Mirror Obstruction Area
- CGE Dovetail Bar
- Celestron RASA 11 Telescope
- Celestron CGX-L Equatorial Mount
- Hand Controller
- 2.75'' Stainless Steel Tripod
- 9x50 Achromatic Finder Scope
- 2x 10Kg Counterweight
- 2 Years Warranty
Delivery leadtime Estimated 4 Months