
Celestron CGX 1100 RASA Computerised Telescope
The Celestron CGX 1100 RASA Computerised Telescope features an 11 inch RASA f/2.2 astrograph for ultra-fast imaging. Paired with the robust CGX mount, this GoTo Telescope is a premium setup, delivering outstanding wide-field results for advanced users of the Rasa 11.
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Capturing impressive deep-sky images is easier than ever with the Celestron RASA 11 inch model, the perfect companion to today’s DSLR or astronomical CCD cameras. This fast, wide-field f/2.2 system is a premier Go To Telescope that offers two huge advantages over traditional f/10 systems: better apparent tracking and shorter exposures. This means the Rasa 11 allows you to create better-looking images in a shorter time, even without an autoguider. The Rasa 1100 is a game-changer for imagers.
With today's large CCD sensor sizes, the Rasa 11 offers a 43.3mm optimized image circle to capture pinpoint stars on the largest imaging chips. Combined with a focal length of 620mm, the Celestron Rasa 11 is a must-have instrument for wide-field imaging, surveying, and creating mosaics.
Optical Performance
The Rowe-Ackermann Schmidt Astrograph features newly designed optics with 4-element rare-earth glass for images without false colour and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle of the Rasa11 is unprecedented for an astrograph in this price range. This advanced design is why the Celestron RASA stands apart. The design of the Rasa 11 also provides minimal vignetting.
Advanced Features
Every component of the Celestron CGX 1100 RASA Computerised Telescope is optimized for peak performance. Custom engineered linear brass focuser bearings and a FeatherTouch Micro Focus Knob allow for the fine adjustments needed to get the most from the Rasa 11 optics. A quiet 12V MagLev fan reduces cool down time and provides optimal airflow through the dust-filtered optical tube.
RASA (Rowe-Ackermann Schmidt Astrograph) Features
- Ultra-fast, 11 inch RASA f/2.2 optical design with rare-earth glass for images free of false color, coma, and field curvature. The speed of the Celestron Rasa 11 cuts imaging time by more than half.
- Expansive 43.3 optimized image circle maintains pinpoint stars to the far corners of even the largest astroimaging sensors, while the usable field extends even further to 52mm for larger format sensors.
- Custom engineered linear brass focuser bearing reduces image shift, while dual-speed 10:1 FeatherTouch Micro Focus Knob provides the most precise focusing
- Quiet, high-output 12V MagLev fan reduces cooldown time and blocks dust
- Common camera adapters (T-thread and M48) included for easy attachment to popular CCD and DSLR cameras
CGX Mount and Tripod Features
The new Celestron CGX mount was designed to better support the 11 inch RASA for all imaging pursuits. The CGX is Celestron's equatorial backbone, providing the stability needed for this high-end system.
- The CGX mount is sturdier and more rigid, with quicker dampening time.
- Increased load capacity to 25kg
- Improved motors provide more torque, better slewing and tracking under heavy loads
- The heavy duty belt-drive system on the Celestron CGX mount minimizes backlash and provides smooth motor operation.
- Spring-loaded brass worm wheel and stainless steel worm gear reduce friction and provide optimum gear mesh
- Internal cabling on the CGX allows for worry-free remote operation.
- Internal hard stops for both axes prevents cable tension and tripod strike
- Internal optical sensors on both axes for simple and safe remote operation
- Home sensors allow the mount to always start in the index position regardless of orientation before a power reset
- Limit sensors automatically shut off slewing or tracking before reaching the hard stop fail safe
- Brand new control software developed for professional level control operation and imaging
- The new control software for the Celestron CGX mount enables professional-level control and imaging. The full Celestron CGX Equatorial 1100 RASA package is a professional tool.
- Wider tripod stance for improved stability
- Adjustable EQ head position to optimize center of gravity over the tripod and fully utilize the increased 3°-65° latitude range
- Dual-fit CG-5/Vixen and CGE/Losmandy dovetail saddle
Improved Tripod Includes:
- 2" steel legs with height index marks for quick leveling
- "Jack of all trays" to hold three 1.25" eyepieces, two 2" eyepieces, your smartphone, or other accessories
- +20° of additional tracking past the meridian on either side
- Tripod legs can be collapsed with accessory tray installed for faster setup and transport
Improved Ergonomics
- Two handles for easy pickup and transport
- New ergonomically designed dovetail clamping knobs
- Innovative and improved polar alignment adjustment system
- All-new ergonomic adjustment knobs with reduced friction for smooth and easy positioning under full loads
- Optional add-on polar axis finderscope
Electronics
The advanced electronics are what make the Celestron CGX 1100 RASA Computerised Telescope a superior GoTo Telescope. The seamless integration of software and hardware makes finding objects an effortless task for this powerful Go To Telescope.
- NexStar+ hand control with USB port
- Two AUX accessory ports to support wireless/WiFi alignment and operation with StarSense AutoAlign and SkyPortal WiFi Module accessories (sold separately)
- USB 2.0 port, used to connect directly to PC with included software
- Autoguider port
- PPEC ready
- Threaded 12VDC power input barrel connector
- Internal Real Time Clock (keeps time and site information saved
Compatible With
Full Specifications
Optical Tube Assembly (OTA) |
Optical Design | Rowe-Ackermann Schmidt Astrograph (RASA) |
Aperture | 279mm (11-inches) |
Focal Length | 620mm (24.4-inches) |
Focal Ratio | f/2.2 |
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") Ø, 4.0° |
Usable Field | 52mm (2.04") Ø , 4.8° Only Minimal Performance Loss at Edge of FOV |
Wavelength Range | 400 - 700nm |
Spot Size | < 4.4 μm RMS Across Image Circle |
Central Obstruction | 114mm (4.48") |
Central Obstruction by Diameter | 41% |
Optical Coatings | StarBright XLT |
Off-Axis Illumination | 83% at 21mm (0.82") Off-Axis |
Optical Window | 68mm (2.67") Ø |
Back Focus with Included Camera Adapter | 55mm (2.16") |
Back Focus from Top of Threaded Collar | 72.8mm (2.86") |
Focuser | Ultra-Stable Focusing System (USFS) |
Other Features | Air-Cooling System Integrated Filter Mount |
Optical Tube Construction | Aluminium |
Optical Tube Length | 838.2mm (33") |
Optical Tube Diameter | 330.2mm (13") |
Optical Tube Weight | 19.5kg |
Dovetail | CGE Dovetail Bar |
Computerised Mount |
Mount Type | Computerised Equatorial (EQ) |
Payload Capacity | 25kg |
Tripod Material | Stainless Steel |
Height Adjustment Range (Including Mount and Tripod) | 1200.15 - 1968.5mm |
Tripod Leg Diameter | 50.8mm (2") |
Tripod Weight | 8.7kg |
Accessory Tray | Yes |
Mount Head Weight | 20kg |
Slew Speeds | 9 Slew Speds (Max Speed 4° / Second) |
Tracking Rates | Sidereal, Solar and Lunar |
Tracking Modes | EQ North, EQ South |
GPS | N/A |
Dovetail Compatibility | Dual Saddle Plates (CG-5 / CGE) |
Auxiliary Ports | 2 Aux Ports |
Autoguide Port | Yes |
USB Port | Yes (Hand Controller Input) |
Power Reqiurements | 12V DC 4A (Tip Positive) |
Motor Drive | DC Servo Motors |
Alignment Procedures | 2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick Align |
Periodic Error Correction | Yes |
Computerised Hand Controller | Double Line, 18 Character Liquid Crystal Display; 19 Fiber Optic Backlit LED Buttons and USB 2.0 Port for PC Connection |
NexStar+ Database | 40,000+ Objects with 100 User Defined Programmable Objects and Enhanced Information on Over 200 Objects |
Software | CPWI Telescope Control Software, Celestron Starry Night Special Edition Software, SkyPortal App |
Total Kit Weight | 68kg |
Warranty | Celestron 2 Year Warranty |
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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: 12060
Optical Design | Rowe-Ackermann Schmidt Astrograph (RASA) |
---|---|
Aperture | 279mm |
Focal Length | 620mm |
Focal Ratio | f/2.2 |
Mount Type | German Equatorial CGX |
Motor Drive | Yes |
Dovetail Type | Celestron CGE Mount |
Tube Length | 838.2mm (33") |
Autoguide Port | No |
Electronic Hand Control | Yes |
Warranty Information | 2 Years |
Item | Qty |
Celestron 11" RASA Optical Tube | 1 |
CGX Equatorial Head | 1 |
CGX Tripod | 1 |
Accessory Tray | 1 |
11lb Counterweights | 4 |
Nexstar+ Hand Controller | 1 |
8mm Allen Wrench | 1 |
12V DC Power Cable | 1 |
Hand Control Holster | 1 |