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Celestron CGX Equatorial 925 Schmidt-Cassegrain Telescope

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SKU 12051

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  • Celestron 9.25" SCT and CGX computerised equatorial mount package
  • 9.25" Schmidt-Cassegrain Optical Tube Assembly
  • Celestron's premium StarBright XLT coatings
  • Aluminium Optical Tube
  • 2350mm focal length (f/10)
  • The CGX, with its 55 lb. load capacity, is Celestron’s most innovative, state-of-the art, computerised equatorial mount to date, and provides a very sturdy and rigid platform.
  • The drive system utilises low cog DC Servo motors with integrated optical encoders, belt and pulley motor connection, spring-loaded steel worm gears supported by precision sealed bearings, and brass worm wheels for smooth, accurate slewing and tracking performance with little backlash.
  • Fully remote imaging capable, with optical limit switches, home sensors, through-mount cabling, and hard stops.
  • Included Celestron PWI software allows direct computer control via USB 2.0 connection.
  • Proven NexStar+ computerised telescope control technology supports functions to address imagers’ needs, such as All-Star Polar Alignment, Permanent Periodic Error Correction (PPEC), and adjustable tracking through meridian.

This 9.25" aperture optical tube assembly (OTA) is one the most popular size of Celestron's Schmidt-Cassegrain range and also one its most well regarded too. The telescope is not too large or too heavy to handle meaning that it can be used on a wide range of popular mid-range mounts. The C9.25 features Celestron's StarBright XLT coatings on the corrector plate for maximum light transmission. The telescope has a 2350mm focal length (f/10) making it a good overall performer on a range of celestial objects. 

The telescope comes with a star diagonal for more comfortable viewing of high altitude objects and a 25mm Plossl eyepiece which gives 94x magnification. A 6x30 finderscope to help locate objects completes the package. 

    The Celestron CGX Equatorial mount has been designed from the ground up to provide a solid and accurate platform for your telescope for both visual and astro-imaging requirements. The mount has a number of new and innovative features including a lower profile EQ head, which provides a more compact and stable mount; a better drive system; home and limit optical sensors with internal hard stops making it more remote operation-friendly; internal cable management.

    In addition Celestron have made mechanical and ergonomic improvements too. These include conveniently located mount carrying handles to make transport and mounting (and removing) the mount on/off the tripod easier. There are also large latitude and dovetail clamp adjustment knobs to make the CGX easier to set up with your telescope.

    The mount can be controlled with software developed in conjunction with PlaneWave Instruments - called CPWI - and is supplied free with the mount. CPWI uses advance PointXP mount modelling that allows you to add 100+ points to an alignment model for the mount set up, for the most accurate pointing and tracking possible for your Celestron telescope. The software also features an All-Star Polar Alignment routine, motor focus control and plate solving.


    Optical Design Schmidt-Cassegrain
    Aperture 235mm (9.25")
    Focal Length 2350mm (93")
    Focal Ratio f/10
    Focal Length of Eyepiece 1 25mm (.98")
    Magnification of Eyepiece 1 94x
    Finderscope 6x30
    Star Diagonal 1.25" Star Diagonal
    Optical Tube Aluminium
    Highest Useful Magnification 555x
    Lowest Useful Magnification 34x
    Limiting Stellar Magnitude 14.4
    Resolution (Rayleigh) 0.59 arc seconds
    Resolution (Dawes) 0.49 arc seconds
    Light Gathering Power (Compared to human eye) 1127x
    Secondary Mirror Obstruction 85mm (3.35")
    Secondary Mirror Obstruction by Diameter 36%
    Secondary Mirror Obstruction by Area 13%
    Optical Coatings StarBright XLT
    Optical Tube Length 559mm (22")
    Optical Tube Diameter 271.78mm (10.7")
    Optical Tube Weight 20 lbs (9.07 kg)
    Dovetail CGE Dovetail Bar
    Mount Type Computerised Equatorial
    Instrument load capacity 55 lbs (25 kg)
    Height adjustment range (includes mount and tripod) 1200.15mm - 1968.5mm (47.25" - 77.5")
    Tripod Leg Diameter 50.8mm (2") Steel tripod with graduated markings on lower section
    Latitude adjustment range 3° - 65°
    Mount Head Weight 44 lbs (20 kg)
    Accessory Tray Yes
    Tripod Weight 19.2 lbs (8.7 kg)
    Weight of Counterweights 2 x 11 lbs
    Slew Speeds 9 slew speeds - max speed 4°/second
    Tracking Rates Sidereal, Solar and Lunar
    Tracking Modes EQ North & EQ South
    GPS N/A
    Dovetail Compatibility Dual saddle plates (Vixen and CGE saddle)
    Number of Auxiliary ports 2 Aux ports (Hand Control can use either Aux port)
    Autoguide port Yes
    USB Port Yes, input for Mount and Hand Control
    Power Requirements 12V DC, 4 amps
    Motor Drive DC servo motors
    Alignment Procedures 2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick Align
    Periodic Error Correction Yes
    Computerised Hand Control 2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 port for PC connection
    NexStar+ Database 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
    Software PWI Telescope Control Software, Celestron's Starry Night Special Edition Software, SkyPortal App
    Total Kit Weight 105.2 lbs (47.71 kg)
    Included Items CGX Equatorial Head | CGX Tripod | Accessory Tray | 2 x 11 lbs counterweights | NexStar+ Hand Control | 8mm Allen Wrench | 12V DC Power Cable | Hand Control Holster



    Schmidt-Cassegrain Optics Manual

    CGX Mount Manual

    Adapter to Pier Info Guide

    Celestron PWI Telescope Control Software Instruction Manual

    Celestron Firmware Manager (CFM) Software

    CPWI Software