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Celestron CGX Equatorial 925 HD Telescope
Celestron CGX Equatorial 925 HD Telescope
Celestron CGX Equatorial 925 HD Telescope

Celestron CGX Equatorial 925 HD Telescope

by Celestron
SKU CEL-12056
$4,999.00 - $4,999.00
$4,999.00
$4,999.00 - $4,999.00
$4,999.00
Price Match Policy!
  • 235mm (9.25") EdgeHD Aplanatic, Flat-Field Optical Tube
  • 55 lb (25 kg) Instrument Capacity CGX Equatorial Mount
  • f/10 Focal Ratio with 2350mm Focal Length
  • StarBright XLT Optical Coatings for Maximum Light Transmission
  • 0.49 Arc Second Dawes Limit Resolution
  • 42mm Optimized Image Circle for Full-Frame Sensors
  • DC Servo Motors and 4°/second Slew Speed
  • Includes CPWI Telescope Control Software and NexStar+ Hand Controller
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Celestron CGX Equatorial 925 HD Telescope

    The Celestron CGX Equatorial 925 HD Telescope combines a 235mm (9.25") EdgeHD optical tube with the robust CGX equatorial mount, which supports a 55 lb instrument load. The f/10 optical system has a 2350mm focal length, delivering 102x magnification with the included 23mm eyepiece. With its 0.49 arc second Dawes limit resolution and StarBright XLT coatings, this system gathers 1127x more light than the human eye, making it a premier, observatory-grade platform for high-resolution astroimaging.

    EdgeHD Optics: A 235mm Aplanatic, Flat-Field Astrograph

    The 235mm EdgeHD optical system is engineered as a true astrograph, delivering aberration-free stars across a flat focal plane that fully illuminates a 42mm image circle. Unlike standard Schmidt-Cassegrains or competing coma-free designs with curved fields, the EdgeHD's aplanatic design ensures that stars are pinpoint sharp from the center to the edge of a full-frame camera sensor. This flat-field correction improves resolution and limiting magnitude, allowing you to resolve finer detail on distant galaxies and capture fainter stars than other systems of the same aperture.

    Mechanical Design: Mirror Clutches, Vents, and f/2 Fastar Versatility

    The 9.25" optical tube includes features designed for serious imaging. Flexible tension clutches hold the primary mirror securely to eliminate image shift during long exposures, while rear-cell cooling vents allow the optics to reach thermal equilibrium faster. Every EdgeHD optical tube is Fastar-compatible, allowing you to replace the secondary mirror with an optional lens assembly to convert the telescope into an ultra-fast f/2 wide-field imaging system, dramatically reducing exposure times for capturing large nebulae like the North American Nebula (NGC 7000).

    CGX Mount: A 55 lb Capacity Platform for Remote Imaging

    The CGX mount is Celestron's workhorse equatorial platform, engineered for stability and remote operation with a 55 lb instrument load capacity. Its low-profile design lowers the center of gravity, increasing rigidity for the 21 lb optical tube and additional imaging gear. The belt-driven DC servo motors provide smooth tracking with minimal backlash, while built-in home and limit sensors and internal cabling make it ideal for automated, remote observatory use with the included CPWI software. The dual CG-5/CGE saddle plate accommodates a wide range of optical tubes.

    The 9.25" Advantage: CGX 925 HD vs. 800 HD and 1100 HD

    The 9.25" aperture occupies a strategic sweet spot in the EdgeHD lineup, offering a significant jump in resolving power over the 8" model without the weight and mounting demands of the 11" version.

    • vs. EdgeHD 800: The 925 HD provides 33% more light-gathering area, translating directly to brighter images and higher resolution on targets like the globular clusters in M13.
    • vs. EdgeHD 1100: While the 1100 offers more aperture, its optical tube is significantly heavier. The 21 lb OTA of the 925 HD is more manageable and leaves more of the CGX mount's 55 lb capacity for heavy cameras, filter wheels, and guidescopes.

  • How much imaging equipment can the Celestron CGX 925 HD's mount handle?

    The CGX mount has an instrument load capacity of 55 lbs (25 kg). With the 21 lb optical tube installed, you have 34 lbs of remaining capacity for your camera, filter wheel, off-axis guider, and other accessories, which is ample for most deep-sky imaging setups.

    What makes the EdgeHD optics in the CGX 925 HD better for astrophotography than a standard SCT?

    The EdgeHD is an aplanatic, flat-field design. This means it corrects for both coma and field curvature, producing pinpoint stars across the entire image, even on large full-frame sensors. A standard SCT produces sharp stars only in the center of the field, with stars becoming progressively distorted towards the edges.

    Can I use the Celestron CGX 925 HD for planetary imaging of Jupiter or Saturn?

    Absolutely. The long 2350mm focal length and 0.49 arc second Dawes resolution make the CGX 925 HD an exceptional planetary instrument. Paired with a high-speed planetary camera and a Barlow lens, this telescope can resolve fine details like Jupiter's cloud bands, the Great Red Spot, and the Cassini Division in Saturn's rings.

    How does the CGX 925 HD's Fastar compatibility work?

    Fastar compatibility allows you to remove the secondary mirror and mount a special lens assembly and camera in its place. This converts the telescope from its native f/10 to a very fast f/2 optical system. This dramatically widens the field of view and reduces exposure times by a factor of 25, ideal for capturing large, faint nebulae.

    What software is included with the CGX 925 HD for telescope control?

    The package includes a comprehensive software suite. You get the NexStar+ Hand Control for quick visual observing, Celestron's CPWI Telescope Control Software for full computer control from a PC, the Starry Night Special Edition planetarium software for planning sessions, and the SkyPortal App for mobile device control.

    Is the Celestron CGX 925 HD portable enough for field use?

    While a substantial system with a total weight of 106.2 lbs, it is designed to be transportable. The system breaks down into manageable components: the 21 lb optical tube, 44 lb mount head, 19.2 lb tripod, and two 11 lb counterweights. This allows one person to assemble it in the field without assistance.

  • Optical Tube Assembly
    Optical Design EdgeHD
    Aperture 235mm (9.25")
    Focal Length 2350mm (93")
    Focal Ratio f/10
    Optical Coatings StarBright XLT
    Image Circle 42mm
    Resolution 0.59 arc seconds (Rayleigh), 0.49 arc seconds (Dawes)
    Limiting Stellar Magnitude 14.4
    Light Gathering Power 1127x (Compared to human eye)
    Highest Useful Magnification 555x
    Lowest Useful Magnification 34x
    Secondary Mirror Obstruction 36% by Diameter, 13% by Area
    Included Eyepiece 23mm (102x Magnification)
    Finderscope 9x50
    Star Diagonal 2" with 1.25" adapter
    Optical Tube Material Aluminum
    Optical Tube Length 559mm (22")
    Optical Tube Weight 21 lbs (9.53 kg)
    Dovetail CGE Dovetail Bar
    Mount
    Mount Type Computerized 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 2 x 11 lbs
    Motor Drive DC servo motors
    Slew Speeds 9 speeds, max 4°/second
    Tracking Rates Sidereal, Solar, Lunar
    Latitude Adjustment Range 3° – 65°
    Dovetail Compatibility Dual saddle (CG-5 and CGE)
    Power Requirements 12V DC, 4 amps
    GoTo & Electronics
    Hand Control NexStar+, USB 2.0 Port
    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)
    Software Included CPWI, Starry Night Special Edition, SkyPortal App

    • 9.25" EdgeHD Optical Tube Assembly

      × 1

    • CGX Equatorial Head

      × 1

    • CGX Tripod

      × 1

    • Accessory Tray

      × 1

    • 11 lb Counterweight

      × 2

    • NexStar+ Hand Control

      × 1

    • 9x50 Finderscope with Bracket

      × 1

    • 2" Star Diagonal with 1.25" Adapter

      × 1

    • 23mm Eyepiece (2")

      × 1

    • 12V DC Power Cable

      × 1

    • 8mm Allen Wrench

      × 1

    • Hand Control Holster

      × 1

  • Celestron 2-Year Telescope Warranty