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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.
Celestron CGX Equatorial 1100 HD Telescope
Celestron CGX Equatorial 1100 HD Telescope
Celestron CGX Equatorial 1100 HD Telescope

Celestron CGX Equatorial 1100 HD Telescope

by Celestron
SKU CEL-12057
$5,999.00 - $5,999.00
$5,999.00
$5,999.00 - $5,999.00
$5,999.00
Price Match Policy!
  • 279.4mm (11") EdgeHD Aplanatic, Flat-Field Optics
  • 55 lb (25 kg) Instrument Load Capacity
  • Computerized GoTo German Equatorial CGX Mount
  • 0.42 Arc Second Dawes Resolution
  • StarBright XLT Optical Coatings
  • 42mm Optimized Image Circle
  • Fastar/HyperStar Compatible for f/2 Imaging
1 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Celestron CGX Equatorial 1100 HD Telescope

    The Celestron CGX Equatorial 1100 HD Telescope combines a 279.4mm (11") EdgeHD optical tube with the robust CGX equatorial mount, creating an astrograph-quality system capable of supporting a 55 lb instrument load. Its 2800mm focal length and f/10 ratio resolve down to 0.42 arc seconds (Dawes), capturing 1593x more light than the human eye. The total kit weight of 124.2 lbs provides the stability needed for leveraging the telescope's 660x highest useful magnification on planetary and deep-sky targets.

    11" EdgeHD Optics: A 0.42 Arc Second Flat-Field System

    The core of this system is the 11" EdgeHD, an aplanatic Schmidt-Cassegrain that delivers aberration-free stars across a 42mm image circle, fully illuminating full-frame camera sensors. Unlike standard Schmidt-Cassegrains, the EdgeHD design produces a focal plane three times flatter, ensuring that stars at the edge of your image are as sharp as those in the center. With a Dawes limit of 0.42 arc seconds and StarBright XLT coatings maximizing light transmission, this optical system reveals fine detail in planetary cloud bands and resolves individual stars in distant globular clusters.

    Imaging Versatility: From Native f/10 to Ultra-Fast f/2

    The EdgeHD 1100 is engineered for multiple imaging configurations without compromising quality. At its native 2800mm focal length (f/10), you have the image scale needed for small galaxies and planetary nebulae. For wider perspectives, the optical tube is Fastar-compatible; by replacing the secondary mirror with an optional HyperStar lens assembly, you can transform the telescope into an f/2 imaging system. This ultra-fast configuration captures deep-sky objects in a fraction of the time required at f/10, making it ideal for capturing faint, expansive targets like the North American Nebula (NGC 7000).

    • Mirror Clutches: Flexible tension clutches hold the primary mirror securely to reduce image shift during long exposures, ensuring your guide star remains locked.
    • Tube Vents: Vents on the rear cell allow the primary mirror to reach thermal equilibrium with the ambient air more quickly, improving image stability and sharpness.

    CGX Mount: A 55 lb Capacity Platform for Remote Imaging

    The CGX mount is Celestron's workhorse, designed for stability and remote-operation reliability. It supports a 55 lb (25 kg) payload, easily handling the 28 lb optical tube plus a full astrophotography setup of cameras, filter wheels, and guiders. Low-cog DC servo motors and a belt-drive system provide smooth tracking with minimal backlash, critical for unguided and autoguided exposures. The lower-profile head and heavy-duty 2" steel tripod legs create a stable platform that dampens vibrations quickly. Thoughtful cable management and home/limit sensors make it an ideal choice for backyard observatories and remote imaging sessions.

    NexStar+ and CPWI: 40,000+ Objects and Advanced Telescope Control

    Locating and tracking objects is managed by the proven NexStar+ hand controller and the powerful Celestron PWI (CPWI) software. The internal database contains over 40,000 objects, from planets to distant quasars, all accessible via a simple alignment process. For advanced users, CPWI provides a complete observatory control interface for your PC, featuring an all-sky model for superior pointing accuracy. With features like Permanent Periodic Error Correction (PPEC) and multiple alignment routines, the CGX can be precisely dialed in for any observing or imaging task.

    CGX 1100 HD vs. 925 HD: 40% More Light Gathering Power

    While sharing the same high-performance CGX mount, the choice between the 1100 HD and its 9.25" sibling comes down to aperture. The 11" optical tube delivers 40% more light-gathering power than the 9.25" model. This translates directly to brighter images, shorter exposure times for astrophotography, and the ability to resolve fainter deep-sky objects and finer detail. While the 28 lb optical tube is heavier than the 9.25" version, it remains manageable for transport to dark-sky sites, offering a significant jump in performance for a modest increase in weight.

  • What is the advantage of the Celestron CGX 1100 HD's EdgeHD optics over a standard SCT?

    The EdgeHD is an aplanatic, flat-field design. This means it corrects for both coma (which makes stars at the edge of the field look like comets) and field curvature. For astrophotography with modern camera sensors, this results in sharp, pinpoint stars across the entire image, not just in the center.

    Is the CGX 1100 HD portable for dark sky trips?

    While the total kit weight is 124.2 lbs, the system breaks down into manageable components. The optical tube is 28 lbs, the mount head is 44 lbs, the tripod is 19.2 lbs, and the three counterweights are 11 lbs each. It is considered portable by experienced observers, but it requires multiple trips to assemble and is best suited for drive-to observing sites.

    Can I use a full-frame DSLR or a large astronomy camera with the CGX 1100 HD?

    Absolutely. The EdgeHD optics are designed to produce a 42mm image circle, which is large enough to fully illuminate a 35mm full-frame sensor without significant vignetting. The 55 lb instrument capacity of the CGX mount can easily handle the weight of the telescope plus a heavy camera and accessories.

    How does the CGX 1100 HD perform on planets like Jupiter and Saturn?

    With its 2800mm focal length and 11" aperture, this telescope is an exceptional planetary instrument. The 0.42 arc second resolution is capable of resolving fine details like the Cassini Division in Saturn's rings and intricate cloud bands and festoons in Jupiter's atmosphere. The stable CGX mount ensures the planet stays centered for visual observation or high-frame-rate planetary imaging.

    What do I need to start imaging at f/2 with the CGX 1100 HD?

    To use the Fastar capability, you will need to purchase a separate HyperStar 11 lens assembly from Starizona. This accessory replaces the telescope's secondary mirror. The conversion process is straightforward and allows you to capture wide-field images at an incredibly fast f/2 focal ratio.

    What is the benefit of the CGX mount's belt-drive system?

    The belt-drive system provides smoother tracking and slewing with reduced backlash compared to traditional gear-driven systems. For astrophotography, this means more accurate guiding and rounder stars, as the motors can make finer corrections without the "slop" found in conventional spur gears.

  • Optical Tube Assembly
    Optical Design EdgeHD
    Aperture 279.4mm (11")
    Focal Length 2800mm (110")
    Focal Ratio f/10
    Optical Coatings StarBright XLT
    Image Circle 42mm
    Finderscope 9x50
    Star Diagonal 2" with 1.25" adapter
    Highest Useful Magnification 660x
    Lowest Useful Magnification 40x
    Limiting Stellar Magnitude 14
    Resolution (Rayleigh) 0.5 arc seconds
    Resolution (Dawes) 0.42 arc seconds
    Light Gathering Power 1593x (Compared to human eye)
    Secondary Mirror Obstruction 34% by diameter, 12% by area
    Optical Tube Length 610mm (24")
    Optical Tube Weight 28 lbs (13 kg)
    Dovetail CGE Dovetail Bar
    Mount
    Mount Type Computerized German Equatorial
    Instrument Load Capacity 55 lbs (25 kg)
    Mount Head Weight 44 lbs (20 kg)
    Tripod 2" diameter steel legs
    Tripod Weight 19.2 lbs (8.7 kg)
    Counterweights 3 x 11 lbs
    Latitude Adjustment Range 3° – 65°
    Motor Drive DC servo motors with belt drive
    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+ with USB
    Database 40,000+ objects
    Alignment Procedures 2-Star, 1-Star, Solar System, Quick, Last Alignment
    Periodic Error Correction Yes
    Ports 2x AUX, 1x Autoguide, 1x USB (on mount)
    Software Included CPWI Telescope Control, Starry Night Special Edition
    Total System
    Total Kit Weight 124.2 lbs (56.33 kg)

    • 11" EdgeHD Optical Tube Assembly

      × 1

    • CGX Equatorial Mount Head

      × 1

    • CGX Tripod with Accessory Tray

      × 1

    • 11 lb Counterweights

      × 3

    • NexStar+ Hand Control

      × 1

    • 9x50 Finderscope with Bracket

      × 1

    • 2" Star Diagonal with 1.25" Adapter

      × 1

    • 23mm Eyepiece (122x)

      × 1

    • 12V DC Power Cable

      × 1

  • Celestron 2-Year Telescope Warranty

    Solar Warning

    Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result. Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it. Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.