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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

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Celestron CGX-L Equatorial 1100 SCT

SKU CEL-12071
Original price $6,499.00 - Original price $6,499.00
Original price
$6,499.00
$6,499.00 - $6,499.00
Current price $6,499.00
Price Match Policy!
  • 279.4mm (11") Schmidt-Cassegrain Optical Tube
  • Massive 75 lb (34 kg) instrument load capacity
  • CGX-L Computerized Equatorial Mount with 144mm worm wheels
  • 2800mm focal length at f/10
  • NexStar+ hand control with 40,000+ object database
  • Includes CPWI Telescope Control Software
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty
  • Celestron CGX-L Equatorial 1100 Schmidt-Cassegrain Telescope

    The Celestron CGX-L Equatorial 1100 SCT combines a massive 279.4mm (11") aperture with the observatory-grade stability of the CGX-L mount, which handles a 75 lb instrument load. This system achieves a Dawes limit resolution of 0.42 arc seconds, powered by a 2800mm focal length optical tube with StarBright XLT coatings that gathers 1593 times more light than the human eye. With large 144mm worm wheels for smooth tracking and a 40,000+ object NexStar+ database, this telescope is engineered for serious deep-sky imaging and high-resolution planetary observation.

    11" Schmidt-Cassegrain Optics: 1593x Light Gathering Power at f/10

    The heart of this system is the 11" SCT optical tube, an aperture that places it in the top tier of amateur instruments. With 1593x the light gathering power of the naked eye and a limiting stellar magnitude of 14.7, you can resolve faint galaxies and pull detail from planetary nebulae. The 2800mm focal length is ideal for high-magnification views of Jupiter's cloud bands and Saturn's Cassini Division, while the StarBright XLT coatings ensure maximum light transmission to your eyepiece or camera sensor.

    CGX-L Mount: A 75 lb Capacity Observatory-Grade Platform

    Designed for backyard observatories and remote imaging, the CGX-L mount provides the stability required for long-exposure astrophotography. Its 75 lb payload capacity easily handles the 27.5 lb 11" OTA plus a full suite of imaging gear, including guide scopes, filter wheels, and large cameras. The foundation is a heavy-duty tripod with 2.75" diameter steel legs, ensuring vibrations are minimized for sharp, stable images.

    • Dual Saddle Plate: Accommodates both CGE and CG-5 style dovetails, allowing you to use a wide variety of optical tubes without changing hardware.
    • Ergonomic Design: Features like built-in carry handles, easier polar alignment adjustments, and improved cable management make setup and transport more manageable despite the mount's size.
    • Latitude Range (3°- 65°): The broad latitude adjustment range supports operation from equatorial to temperate latitudes without needing a wedge.

    Precision Tracking: 144mm Worm Wheels and DC Servo Motors

    At the core of the CGX-L's tracking are its large 144mm diameter worm wheels, which provide smoother, more accurate motion for driving heavy loads compared to smaller designs. This mechanical precision is driven by high-torque DC servo motors, delivering responsive slewing up to 3° per second and the fine control needed for long-exposure guiding. The mount also features built-in Periodic Error Correction (PEC) and home/limit optical sensors, allowing for repeatable, reliable performance night after night.

    NexStar+ and CPWI: Integrated Control with a 40,000+ Object Database

    Navigate the night sky with the proven NexStar+ hand controller, featuring a database of over 40,000 celestial objects. For more advanced control, the included CPWI Telescope Control Software unlocks the mount's full potential from your PC. CPWI offers a graphical planetarium interface, advanced polar alignment routines, and complete control over all mount functions. With 4 auxiliary ports and 2 autoguide ports, the system is ready to integrate with your full suite of imaging accessories for a seamless, automated workflow.

    CGX-L 1100 vs. 9.25" SCT: The Advantage of a 279.4mm Aperture

    When choosing a large SCT, the primary decision is often between the 11" and 9.25" models. While both are powerful instruments, the 11" OTA on the CGX-L 1100 offers a significant performance advantage for those who can manage its size.

    • Light Gathering: The 11" (279.4mm) aperture has approximately 41% more light-gathering area than a 9.25" telescope. This translates directly to brighter images, shorter exposure times, and the ability to see deeper into space.
    • Resolution: The larger aperture provides a higher theoretical resolution, with a Dawes limit of 0.42 arc seconds compared to the 0.5 arc seconds of a 9.25" scope. This allows for finer detail on planets and the splitting of closer double stars.
    • Weight and Portability: The trade-off for this increased power is weight. The 11" OTA weighs 27.5 lbs, while a 9.25" OTA is closer to 20 lbs. The CGX-L mount handles either with ease, but the 11" OTA is a more substantial piece of equipment to lift and mount.
  • What is the real-world imaging payload of the Celestron CGX-L 1100 SCT?

    While the CGX-L mount has a stated instrument capacity of 75 lbs, a good rule for astrophotography is to stay at or below 75% of this value for optimal guiding. This gives you a comfortable imaging payload of around 55 lbs. With the 27.5 lb 11" OTA, you have approximately 27.5 lbs of remaining capacity for your camera, guide scope, filter wheel, and other accessories.

    How does the CGX-L 1100 SCT perform on small targets like the Ring Nebula (M57)?

    The 2800mm focal length makes this system ideal for smaller deep-sky objects. On the Ring Nebula (M57), you can easily resolve the central star under good seeing conditions and discern color variations within the nebula itself. The 0.42 arc second resolution provides the power needed to study the fine structures of planetary nebulae and resolve individual stars in distant globular clusters like the Hercules Cluster (M13).

    Is the CGX-L 1100 SCT portable enough for field use?

    With a total kit weight of 170.3 lbs, the CGX-L 1100 SCT is best suited for a backyard observatory or a semi-permanent setup. While it can be transported to a dark sky site, it requires breaking the system down into its three heaviest components: the 52.6 lb mount head, the 46.2 lb tripod, and the 27.5 lb optical tube. It is a multi-trip, two-person job for safe assembly in the field.

    What are the advantages of the 144mm worm wheels on the CGX-L mount?

    Larger worm wheels provide smoother and more accurate tracking, which is critical for long-exposure astrophotography. The larger diameter means there are more teeth engaging at any given time, which reduces periodic error and allows the mount to guide more precisely, especially when carrying a heavy and long focal length telescope like the 11" SCT.

    Can I control the CGX-L 1100 SCT from a computer?

    Yes. The system includes Celestron's CPWI Telescope Control Software, which allows for full control of the mount from a Windows PC via a USB connection. You can use its graphical planetarium interface to select targets, run advanced polar alignment routines, and sync the mount with third-party astrophotography software.

    What is the benefit of the dual saddle plate on the CGX-L?

    The dual saddle plate provides versatility by accepting both the wider CGE-style dovetail bar (like the one on the included 11" SCT) and the narrower CG-5/Vixen-style dovetail bar. This means you can easily mount other telescopes you may own on the CGX-L without needing to purchase an adapter plate, saving you time and money.

  • Optical Tube Specifications
    Optical Design Schmidt-Cassegrain
    Aperture 279.4mm (11")
    Focal Length 2800mm (110")
    Focal Ratio f/10
    Optical Coatings StarBright XLT
    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 1593x (Compared to human eye)
    Secondary Mirror Obstruction 95mm (3.75")
    Obstruction by Diameter 34%
    Obstruction by Area 12%
    Optical Tube Length 610mm (24")
    Optical Tube Weight 27.5 lbs (12.4 kg)
    Dovetail CGE Dovetail Bar
    Included Eyepiece 40mm (70x Magnification)
    Finderscope 9x50
    Star Diagonal 1.25" Star Diagonal
    Mount Specifications
    Mount Type Computerized Equatorial
    Instrument Load Capacity 75 lbs (34 kg)
    Mount Head Weight 52.6 lbs (23.8 kg)
    Tripod Weight 46.2 lbs (21 kg)
    Counterweights 2 x 22 lbs
    Tripod 2.75" Steel Legs
    Latitude Adjustment Range 3° - 65°
    Motor Drive DC servo motors
    Slew Speeds 9 speeds, max 3°/second
    Tracking Rates Sidereal, Solar, Lunar
    Dovetail Compatibility Dual saddle (CG-5 and CGE)
    Electronics & Software
    Hand Control NexStar+, USB 2.0 Port
    Object Database 40,000+ objects
    Alignment Procedures 2-Star, 1-Star, Solar System, Last, Quick
    Periodic Error Correction Yes
    Auxiliary Ports 4
    Autoguide Port 2
    Power Requirements 12V DC, 3 amps
    Software CPWI, Starry Night Special Edition, SkyPortal App
    Total Kit Weight 170.3 lbs (77.11 kg)
    • 11" Schmidt-Cassegrain Optical Tube Assembly

      × 1

    • CGX-L Equatorial Head

      × 1

    • CGX-L Tripod

      × 1

    • Accessory Tray

      × 1

    • 22 lb Counterweight

      × 2

    • NexStar+ Hand Control

      × 1

    • DC Power Cable (Cigarette Lighter Adapter)

      × 1

    • 9x50 Finderscope with Bracket

      × 1

    • 1.25" Star Diagonal

      × 1

    • 40mm Eyepiece (1.25")

      × 1

    • 8mm Allen Wrench

      × 1

  • Celestron 2-Year Telescope Warranty