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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 Equatorial 1100 SCT

SKU CEL-12052
Original price $4,999.00 - Original price $4,999.00
Original price
$4,999.00
$4,999.00 - $4,999.00
Current price $4,999.00
Price Match Policy!
  • 11" (279.4mm) Schmidt-Cassegrain Optical Tube
  • 2800mm Focal Length at f/10
  • CGX Computerized Equatorial Mount with 55 lb load capacity
  • StarBright XLT Optical Coatings
  • Dual CG-5/CGE Saddle Plates
  • CPWI Telescope Control Software Included
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty
  • Celestron CGX Equatorial 1100 Schmidt-Cassegrain Telescope

    The Celestron CGX Equatorial 1100 Schmidt-Cassegrain Telescope combines a massive 279.4mm (11") aperture with the robust 55 lb instrument capacity of the CGX equatorial mount. This system delivers the light gathering power—1593 times that of the human eye—required for serious deep-sky imaging and high-resolution planetary viewing. With a 2800mm focal length and a Dawes limit resolution of 0.42 arc seconds, the CGX 1100 resolves fine detail on Jupiter's cloud bands and splits tight double stars with authority, all while being supported by a platform engineered for stability and precise tracking.

    11" Schmidt-Cassegrain Optics: 0.42 Arc-Second Resolution

    At the heart of this telescope is the 11" Schmidt-Cassegrain optical tube, which gathers 89% more light than an 8" model. This significant increase in aperture allows you to resolve objects down to a limiting stellar magnitude of 14.7. Celestron's StarBright XLT optical coatings maximize transmission across the visual spectrum, ensuring bright, high-contrast views of faint galaxies and nebulae from the included 70x magnification 40mm eyepiece.

    CGX Mount Design: A 55 lb Capacity Imaging Platform

    The CGX mount was engineered from the ground up for astrophotography. Its 55 lb load capacity easily handles the 27.5 lb optical tube plus cameras and guide scopes, while the low-profile head enhances stability by lowering the center of gravity. The mount rests on a heavy-duty tripod with 2" (50.8mm) diameter steel legs, and features a dual-fit saddle plate compatible with both CGE and CG-5 style dovetails for maximum versatility.

    • Ergonomic Design: Integrated carrying handles and ergonomic latitude and azimuth adjusters make setup and polar alignment faster and more comfortable.
    • Cable Management: Internal cabling for power and accessories prevents snags and keeps your setup clean. Power and accessory ports are fixed on the base, so they do not move with the mount during slewing.
    • Stable Tripod: The 2" steel tripod provides a rigid foundation, with graduated markings on the legs to make leveling on uneven ground simple and repeatable.

    DC Servo Motors: 4°/Second Slewing and PPEC for Imaging

    High-torque DC servo motors drive the CGX, providing responsive slewing at up to 4° per second to quickly locate any of the 40,000+ objects in the database. For imagers, the mount's belt-drive system minimizes backlash for smooth tracking, while built-in Periodic Error Correction (PPEC) allows you to train out the worm gear's periodic errors, leading to sharper long-exposure images. The system offers Sidereal, Solar, and Lunar tracking rates to follow any celestial object precisely.

    NexStar+ and CPWI: 40,000+ Objects with PC Control

    Navigate the night sky using the classic NexStar+ hand control, which features a database of over 40,000 celestial objects and multiple alignment procedures for a quick start to your session. For a more advanced experience, connect the mount to your PC via its USB 2.0 port and use the included Celestron PWI (CPWI) Telescope Control Software. CPWI provides a complete graphical planetarium interface for point-and-click control of your telescope.

    CGX 1100 vs. Smaller SCTs: The 89% Light-Gathering Advantage

    Choosing an aperture is a balance between light-gathering power and portability. While the CGX 1100's optical tube weighs a manageable 27.5 lbs, its performance is in a different class compared to smaller instruments.

    • Against an 8" SCT: The CGX 1100 captures 89% more light, which means significantly shorter exposure times for deep-sky imaging and the ability to resolve fainter stars and galactic detail.
    • Against a 9.25" SCT: It still provides over 40% more light-gathering power, a noticeable jump that brings out the faint outer arms of galaxies like the Whirlpool Galaxy (M51) and resolves dimmer stars in globular clusters like M13.
  • What is the realistic imaging payload for the Celestron CGX 1100?

    While the CGX mount has a stated instrument capacity of 55 lbs, for long-exposure astrophotography it's best to stay around 75% of that limit. The 11" OTA weighs 27.5 lbs, leaving ample capacity for a guide scope, camera, filter wheel, and other accessories without compromising tracking accuracy.

    How does the CGX 1100 perform on Jupiter and Saturn?

    The telescope's long 2800mm focal length and 0.42 arc-second Dawes resolution make it an exceptional planetary instrument. On nights of good seeing, you can push the magnification to see details like the Cassini Division in Saturn's rings, shadow transits of Jupiter's moons, and subtle color variations in Jupiter's Great Red Spot.

    Can I control the CGX 1100 telescope with my laptop?

    Yes. The CGX 1100 includes a license for Celestron's CPWI Telescope Control Software. By connecting the mount's USB 2.0 port to your PC, you can use CPWI's graphical interface to align the mount, slew to objects, and integrate with other astronomy software.

    Is the CGX 1100 portable enough for dark sky sites?

    While the total kit weight is 123.7 lbs, the system breaks down into manageable components. The heaviest single part is the mount head at 44 lbs. The 27.5 lb optical tube and 19.2 lb tripod are quite manageable for one person to set up, making it a viable option for transport to remote observing locations.

    What is the benefit of the CGX mount's dual saddle plate?

    The dual saddle plate accepts both the wider CGE-style dovetail bar (included with the 11" OTA) and the narrower CG-5 (Vixen-style) dovetail. This means you can easily mount other telescopes you may own, like a smaller wide-field refractor, onto the CGX mount without needing to change the saddle.

    Can I use this telescope for viewing deep-sky objects like the Orion Nebula (M42) from the city?

    Yes, the large 11" aperture is a major advantage in light-polluted skies. It gathers enough light to punch through skyglow and reveal brighter deep-sky objects. For nebulae like M42, you'll be able to clearly resolve the four central stars of the Trapezium and see significant structure in the surrounding gas clouds, even from a suburban backyard.

  • 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") by diameter (34%) / by area (12%)
    Optical Tube Aluminum
    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"
    Mount Specifications
    Mount Type Computerized German Equatorial
    Instrument Load Capacity 55 lbs (25 kg)
    Mount Head Weight 44 lbs (20 kg)
    Tripod 2" Steel Legs, 19.2 lbs (8.7 kg)
    Counterweights 3 x 11 lbs
    Latitude Adjustment Range 3° – 65°
    Motor Drive DC Servo Motors
    Slew Speeds 9 speeds, max 4°/second
    Tracking Rates Sidereal, Solar, Lunar
    Dovetail Compatibility Dual saddle (CG-5 and CGE)
    Power Requirements 12V DC, 4 amps
    GoTo & Electronics
    Hand Control NexStar+, USB 2.0 Port
    Object Database 40,000+ Objects
    Alignment Procedures 2-Star, 1-Star, Solar System, Last, Quick Align
    Periodic Error Correction Yes
    Autoguide Port Yes
    Auxiliary Ports 2
    USB Port Yes (on mount and hand control)
    Included Software CPWI, Celestron Starry Night Special Edition, SkyPortal App
    Physical Specifications
    Total Kit Weight 123.7 lbs (56.11 kg)
    • Celestron 11-inch Schmidt-Cassegrain OTA

      11" Schmidt-Cassegrain OTA

      × 1

    • Celestron CGX Equatorial Mount Head

      CGX Equatorial Head

      × 1

    • Celestron CGX Tripod

      CGX Tripod

      × 1

    • Celestron 11 lb Counterweights

      11 lb Counterweights

      × 3

    • Celestron NexStar+ Hand Control

      NexStar+ Hand Control

      × 1

    • Celestron 9x50 Finderscope

      9x50 Finderscope

      × 1

    • Celestron 40mm Eyepiece

      40mm Eyepiece (1.25")

      × 1

    • Celestron 1.25-inch Star Diagonal

      1.25" Star Diagonal

      × 1

    • Accessory Tray

      × 1

    • 12V DC Power Cable

      × 1

  • Celestron 2-Year Telescope Warranty