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

 

Recommended Accessories

	Celestron StarSense AutoAlign Accessory Automatically align your telescope in moments! With a StarSense AutoAlign Accessory, you will no longer need to align your telescope by manually inputting data.
	Celestron StarSense AutoGuider A new autoguiding tool built for Celestron computerised telescopes. Not only can this be used to align your telescope in just 3 minutes, it improves your scope's tracking accuracy and replaces the need to get a separate guide scope and guide camera to do so.
	Celestron NeXYZ Smartphone Adapter With the Celestron NeXYZ Smartphone Adapter, you can take images or videos through your telescope eyepiece using your smartphone. This is a great way to get started in astrophotography.
	Celestron 1.25-inch Eyepiece and Filter Kit Expand your viewing capabilities with a complete 1.25-inch eyepiece and filter kit! Includes 5 eyepieces, a 2x barlow lens and 7 filters, and a convenient carry case.
	saxon Optical Lens Cleaning Kit Keep your telescope in top shape by protecting it from dust and debris!

	Celestron StarSense AutoAlign Accessory Automatically align your telescope in moments with this accecssory!
	Celestron StarSense AutoGuider This autoguider improves your scope's tracking accuracy and replaces the need to get a separate guide scope and guide camera. It can also be used to align your telescope in just 3 minutes!
	Celestron NeXYZ Smartphone Adapter Take images or videos through your telescope eyepiece using your smartphone. This is a great way to get started in astrophotography.
	Celestron 1.25-inch Eyepiece and Filter Kit This complete kit includes 5 eyepieces, a 2x barlow lens and 7 filters, and a convenient carry case.
	saxon Optical Lens Cleaning Kit Keep your telescope in top shape by protecting it from dust and debris!

 

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