Celestron CGX 11-Inch Rowe-Ackermann Schmidt Astrograph V2
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The CGX 1100 Rowe-Ackermann Schmidt Astrograph V2 Telescope sets a new standard in astroimaging systems at an extremely affordable price. The telescope is an excellent advanced-level imaging setup. It produces images in a fraction of the time compared to other optical tubes. The CGX mount provides superior performance for larger telescopes while taking advantage of Celestron’s most advanced technologies: All-Star Polar Alignment, Celestron PWI telescope control software, Starry Night Special Edition software, SkyAlign, and permanently programmable periodic error correction (PPEC). If you’re an experienced imager, you’ll love taking this portable mount to a dark sky site and enjoying all the conveniences of a larger observatory mount.
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.
Optical Performance
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.
Advanced Features
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. The integrated 12V DC MagLev fan reduces cooldown time and provides optimal airflow through the dust-filtered optical tube.
Complete Astroimaging System
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 provide a connection for use of optional accessories like a guide scope.
CGX Mount
Celestron’s engineering team applied their years of experience designing German equatorial mounts to CGX, a culmination of all Celestron’s advancements in technology, value, and ease of use. Capable of carrying the RASA 11 with ease, the CGX is perfect for backyard and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support advanced telescopes, imaging kits, and the latest in wireless tech accessories.
Mount
| Mount Type | Computerized Equatorial |
Tripod
| Material | Stainless Steel |
Optical Tube Assembly
| Aperture | 11-inch/279mm |
| Focal Length | 620mm |
| Focal Ratio | f/2.2 |
| Optical Tube Dimensions | 33 x 13 inch |
- 42mm (1.65 inch) T-thread camera adapter
- 48mm (1.89 inch) camera adapter
- Dust cover
- Fan battery pack
Celestron CGX 11-Inch Rowe-Ackermann Schmidt Astrograph V2
| Optical design | Rowe-Ackermann Schmidt Astrograph |
| Aperture | 279mm (11-inch) |
| Focal length | 620mm (24.4 inch) |
| Focal ratio | f/2.2 |
| Central obstruction diameter | 114mm (4.48 inch) (41 percent of aperture diameter) |
| Light gathering power (Compared to human eye) | 1588x |
| Resolution (Rayleigh) | 0.49 arc seconds |
| Resolution (Dawes) | 0.41 arc seconds |
| Image circle | 43.3mm (1.7-inch) , 4.0-degree |
| Useable field | 52mm (2.04 inch) , 4.8-degree only minimal performance loss at edge of FOV |
| Wavelength range | 400 - 700 nm |
| Spot size | < 4.4 μm RMS across FOV |
| Optical coatings | StarBright XLTOff-axis |
| Illumination | 83 percent at 21mm (.82 inch) off-axis |
| Optical window | 68mm (2.67 inch) |
| Back focus with included camera adapter | 55mm (2.16 inch) |
| Back focus from top of threaded collar | 72.8mm (2.86 inch) |
| Optical tube | Aluminum |
| Optical tube length | 838.2mm (33 inch) |
| Optical tube diameter | 330.2mm (13 inch) |
| Focuser | Ultra-stable focus system |
| Finderscope | Not included |
| Optical tube weight | 43 lb (19.5 kg) |
| Other features | Ventilation fan, dual dovetail mounting bars |
| Included items | |
| Dovetail | CGE dovetail bar |
| Mount Information | |
| Mount type | Computerized equatorial |
| Instrument load capacity | 55 lb (25 kg) |
| Height adjustment range (includes mount and tripod) | 1200.15mm - 1968.5mm (47.25 inch - 77.5 inch) |
| Tripod leg diameter | 50.8mm (2 inch) |
| Steel tripod latitude adjustment range | 3-degree - 65-degree |
| Mount head weight | 44 lb (20 kg) |
| Accessory tray | Yes |
| Tripod weight | 19.2 lb (8.7 kg) |
| Weight of counterweights | 4 x 11 lb |
| Slew speeds | 9 slew speeds - max speed 4-degree/second |
| Tracking rates | Sidereal, solar and lunar |
| Tracking modes | EQ north and EQ south |
| GPS | N/A |
| Dovetail compatibility | Dual saddle plates (CG-5 and CGE saddle) |
| Number of auxiliary ports | 2 |
| AUX ports (Hand Control can use either AUX Port) Autoguide port | Yes |
| USB port | Yes, input for mount and hand control |
| Power requirements | 12V DC, 4 amps |
| Motor drive | DC servo motors |
| Alignment procedures | 2-Star Align, 1-Star Align, solar system align, last alignment, quick align |
| Periodic error correction | Yes |
| Computer hand control | 2 line x 18 characters backlit liquid crystal display, 19 LED-backlit buttons, USB 2.0 Port for PC connectionNexStar+ database:40,000+ objects, 100 user-defined programmable objects. Enhanced information on over 200 objects. |
| Software | CPWI telescope control software, Celestron starry night special edition software, and skyportal app |
| Total kit weight | 150.2 lb (68 kg) |
Frequently Asked Questions
How do I return an item?
How do I return an item?
Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
Will I receive a full refund when I return an item?
Will I receive a full refund when I return an item?
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.
How many days do I have to make a return?
How many days do I have to make a return?
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days.
My item was damaged in transit. How do I place a return?
My item was damaged in transit. How do I place a return?
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage.
There’s an issue with my order, what should I do?
There’s an issue with my order, what should I do?
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.
Can I exchange an item?
Can I exchange an item?
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.
If I ordered a kit, do I have to return all the items?
If I ordered a kit, do I have to return all the items?
If you ordered a kit, you must return all components and accessories to receive a full refund.
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.
Do you offer repairs?
Do you offer repairs?
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.
What is your return policy?
What is your return policy?
Most items can be returned within 30 days for a full refund. Click here to read our full return policy.




