Celestron CGX-L 1100 SCT

11" Schmidt-Cassegrain Optical Tube Assembly

£6,299.00

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Aluminum Optical Tube
Celestron's premium StarBright XLT coatings
2800 mm focal length (f/10)
40 mm eyepiece included (70x)
Visual back allows for use with 1.25" accessories 9x50 finderscope to help accurately find objects

See below for the Review from June 2017 of the UK astronomy magazine Astronomy Now

Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed 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 144 mm diameter worm wheels which provide smoother operation and can more accurately drive heavier loads, longer 270 mm dovetail saddle to support larger optical tubes, remote operation friendly features such as home and limit optical sensors, easier polar alignment adjustments, and better cable management overall. In addition to that, we’ve made mechanical and ergonomic improvements throughout to make the mount sturdier, easier to use, and easier to transport. COMPACT. ERGONOMIC. INNOVATIVE.

NEW CGX-L FEATURES

Increased 75 lb load capacity. Exceptional load capacity to weight ratio

Additional Aux accessory ports and autoguider port on the Dec axis for better cable management

Larger 144 mm diameter worm wheels to better and more accurately drive heavier loads

Longer 270 mm dovetail saddle to better support larger optical tubes

Massive 70 mm stainless steel tripod legs with a wider stance for improved stability under heavy loads

New accessory tray holds three 1.25” and two 2” eyepieces with an upright stand for your smartphone or tablet

Heavy duty, 31.5 mm stainless steel counterweight shaft to support additional counterweights

Optional add-on polar axis finderscope custom designed for CGX and CGX-L

Supports WiFi and wireless operation accessories such as StarSense AutoAlign and SkyPortal WiFi Module (sold separately)

Warranty: 2 years

Compact, lower profile equatorial head provides improved stability and portability. Sturdier and more rigid with quicker dampening time

Improved motors provide more torque, better slewing and tracking under heavy loads

Heavy duty belt-drive system minimizes backlash while providing smooth motor operation at full capacity

Clear windows built into motor covers so pulleys and belts can be monitored

Spring-loaded brass worm wheel and stainless steel worm gear reduce friction and provide optimum gear mesh

Internal cabling for worry-free remote operation. Power input and lower accessory ports remain stationary while the mount slews to avoid snags

Internal hard stops for both axes prevent 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

Includes Celestron's new PWI telescope control software, co-developed by PlaneWave Instruments. Software features multi-point mount modeling for extremely precise pointing accuracy

Software Polar Align: “All-Star Polar Alignment” allows quick and very precise polar alignment. Align on any bright named star without extra polar alignment accessories, apps, or other assistance

Adjustable EQ head position to optimize center of gravity over the tripod and fully utilize the increased 3º-65º latitude range

Dual-fit Vixen/CG-5 and Losmandy/CGE dovetail saddle

+20º of additional tracking past the meridian on either side

Redesigned tripod has a widened stance for added stability. The minimum tripod height has also been lowered per user feedback

Tripod legs can be collapsed with accessory tray installed for faster setup and transport

IMPROVED ERGONOMICS:

Integrated handles for easy transport and portability

All-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. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. Redesigned azimuth adjustment with low-friction Teflon bearings to make adjustments easy under full load. No more binding, rough adjustments!

Easy to read latitude scale

ELECTRONICS:

NexStar+ hand control with USB port

USB 2.0 port used to connect directly to PC with PWI Software

2 available autoguider ports for optimum cable management

PEC sensor and PPEC ready

Threaded 12VDC power input barrel connector

Internal Real Time Clock (keeps time and site information saved)

On/Off rocker switch with red LED

Our view

The Celestron CGX-L telescopes are considered observatory class instruments. That is to say they were designed for the observatory in mind. Although the CGX-L mounts can be transported around to dark sky sites and star parties, the weight of the entire mount is better suited to a fixed observing position, either in an academic establishment observatory, society observatory, private back garden dome or even a run-off shed. These mounts can hold a C14 tube assembly with ease, and are extremely accurate pointing and GOTO devices, providing time is taken to set them up correctly initially. The CGX-L mounts use American Pittman servo motors that are high torque motors suited to working with heavy loads. The CGX-L mounts replaced the older American-made CGX-L mounts, and are more massive mounts with greater weight bearing capacity for imaging. The CGX-L 1100 is the smallest telescope we recommend as a complete telescope/mount pair as a CGX-L package.

Tips

Requirements. You will need a power supply, either a 12v DC Powertank or 230vAC to 12v DC regulated adapter with tip positive connection to the telescope. The Tracer LiPo Batteries are the popular power supply for these telescopes.

Budget for the Celestron dew shield and a Neutral Density (ND) filter or a polarising filter, for the moon. Also budget for a 2" star diagonal to make full use of the Celestron and Skywatcher 2" eyepieces available.The Baader UHC, Oxygen III and H-beta filters are also must-have accessories with this scope. As with all SCTs, keep them collimated correctly, you will be rewarded with much better image quality. Collimating an SCT or even an Edge HD SCT is simple. Contact us at Northallerton if further information is required.

With any Cassegrain telescope you will have to consider the affect dew fall. The cheapest solution is a lens hood but when dew is a real problem then heater straps will evaporate dew off.

Optical Tube
Optical Design	Schmidt-Cassegrain
Aperture (mm)	279.4 mm (11 in)
Focal Length	2800 mm (110 in)
Focal Ratio	10
Focal Length of Eyepiece 1 (mm)	40 mm (1.57 in)
Magnification of Eyepiece 1	70x
Finderscope	9x50
Star Diagonal	1.25
Optical Tube	Aluminum
Highest Useful Magnification	660x
Lowest Useful Magnification	40x
Limiting Stellar Magnitude	14.7
Resolution (Rayleigh)	0.5 arc seconds
Resolution (Dawes)	0.42 arc seconds
Light Gathering Power (Compared to human eye)	1593x
Secondary Mirror Obstruction	3.75 in (95 mm)
Secondary Mirror Obstruction by Diameter	34%
Secondary Mirror Obstruction by Diameter	12%
Optical Coatings	StarBright XLT
Optical Tube Length	24 in (610 mm)
Optical Tube Weight	27.5 lbs (12 kg)
Dovetail Compatibility	CGE Mount

Mount
Mount	German Equatorial
Instrument load capacity	75 lbs
Tripod height adjustment range	35.75” to 52.75”
Tripod leg diameter	2.75"
Latitude adjustment range	3º-65º
Tripod Weight	46.2 lb
EQ Head Weight w/o Counterweight Shaft	47 lb
Total EQ Head Weight	52.6 lb
Max Slew Speed	4º/second (3º/second is default)
Tracking Rates	Sidereal, Solar and Lunar
Number of Auxiliary ports (for hand control and accessories)	4
Autoguide port	Yes
USB Port	Yes
Software	PWI Telescope Control Software
Included Items
	CGX-L Equatorial Head
	CGX-L Tripod
	Accessory Tray
	2 x 22 lbs counterweight
	NexStar+ Hand Control
	DC Power Cable (plugs into cigarette lighter socket)
	8 mm Allen wrench (contained in rear carry handle)

WIFI

Celestron’s telescopes reach a new level with integrated WiFi! Leave your hand control behind and slew to all the best celestial objects with a tap of your smart device. Connect your device to your WiFi telescope’s built-in wireless network and explore the universe with Celestron’s SkyPortal mobile app for iOS and Android.

Or upgrade your compatible Celestron computerized telescope with the SkyPortal WiFi module. SkyPortal provides full wireless control of your telescope and turns your smart device into your own personal planetarium and observatory!

SKYPORTAL

Celestron’s newest planetarium app is an astronomy suite that redefines how you experience the night sky. Explore the Solar System, 120,000 stars, over 200 star clusters, nebulae, galaxies, and dozens of asteroids, comets, and satellites—including the ISS. SkyPortal includes everything you need to experience the night sky in an exciting new way.

STARSENSE

With Celestron’s patented StarSense Technology, telescope alignment has never been easier! Just attach the StarSense AutoAlign accessory, push the Align button on the hand control or smart device, and StarSense begins capturing and comparing images of the night sky against its internal database.

In about three minutes, it’s gathered enough information to triangulate its position and align itself. Then, press the Sky Tour button: StarSense will automatically slew to all the best stars, planets, galaxies, and more currently visible in the night sky.