Focus Scientific

Celestron CGX Equatorial 925HD EdgeHD 235mm (9.25\") Computerized Schmidt-Cassegrain Telescope

The Celestron CGX is the culmination of over 8 years of experience the engineering team gained designing the previous generation of mounts. Technologies have advanced, as well as ease-of-use and value.

The new CGX was designed to better support your telescope for both visual and astro-imaging pursuits. Key design goals included a lower profile EQ head providing a more compact and more stable setup; a better drive system, remote operation-friendly with home and limit optical sensors, easier polar alignment adjustments and better cable management. In addition to that, we’ve made mechanical and ergonomic improvements throughout to make the mount sturdier, easier to use, and transport. The CGX is our new Equatorial backbone to support a wide range of telescopes.

Product specifications subject to change. More description coming soon.

A pioneer in the manufacture of high-quality low-cost Schmidt-Cassegrain telescopes, Celestron continues to draw customers in with its new Aplanatic Schmidt-Cassegrain optics, nicknamed "EdgeHD", which virtually eliminates coma abberation and field curvature. Stars will appear pin-point from edge to edge, with very low distortion near the edges.

Dual breather ports with 60 micon mesh filters are located behind the primary mirror to help rid the optical tube of undesirable thermal differences while keeping dust out of the equipment. The faster the scope can reach equilibrium, the sooner you can get busy under the stars.

Flexible photographic options, such as prime-focus, eyepiece projection, focal reducers, and piggyback mounts, coupled with the solid wide dovetail (Losmandy style), will take your hobby to the next level.

Dual mirror locks work in concert with the helical focus and primary mirror baffle to prevent unwanted mirror movement over the course of a long exposure.

Mount Features

  • Dual saddle accepts 44mm (1.75") and 80mm (3") dovetail bars (compatible with Celestron, Sky-Watcher, Losmandy, Vixen and more)
  • Automatically track objects with accuracy.
  • All-Star polar alignment for accurate setup for astrophotography and excellent goto performance
  • High payload capacity meets the needs of 12" scopes or smaller
  • Permanent Periodic Error Correction (PPEC) is non-volatile for error-free tracking with no need to constantly re-record

Optical Tube Features

  • EdgeHD optics yield pin-point stars from edge-to-edge with no coma or field curvature
  • StarBright XLT coatings for better light transmission
  • Fastar compatible tube comes with removable secondary mirror for fast f/2.5 imaging
  • Flexible visual/photographic use
  • Sturdy 80mm (3") dovetail bar
  • Dual cooling ports with 60 micron mesh filters
  • Primary mirror locks eliminate unwanted mirror movement during long exposures
  • Sturdy 80mm (3") dovetail bar (Losmandy style)

Optical Tube Specifications

  • 235mm (9.25") Aperture
  • 2350mm (92.5") Focal Length
  • Focal ratio: f/10
  • Optical design: Aplanatic Schmidt-Cassegrain
  • Optical coatings: Starbright XLT
  • Fastar compatible: Yes
  • Eyepiece: 23mm Axiom ocular (2") (102x)
  • Star diagonal: 2" mirror diagonal w/ 1.25" reducer adapter
  • 9x50mm finderscope with quick-detach bracket
  • Mounting: 80mm (3") dovetail bar
  • Optical tube length: 559mm (22")
  • Weight: 9.5kg (21lbs)

Mount and Tripod Specifications

  • Mount Type: German Equatorial style
  • Analog setting circles: not required
  • Dovetail Saddle: Accepts 44mm (1.75") and 80mm (3") dovetail (not included)
  • Steel worm gear and 90mm pitch diameter brass worm wheel
  • Drive Motors - Low Cog DC Servo motor with integrated optical encoders offer smooth, quiet operation and long life
  • Max Slew Speed: 5°/second (4°/second is default)
  • Polar scope: sold separately
  • Internal cable wiring for trouble-free setup and transportation
  • Auxiliary ports: 2
  • Autoguider port: ST-4 compatible
  • Precision machined 40mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings
  • Secure power plug ensures that the Mount's power source is not accidentally disconnected
  • Latitude range: 3° – 65°
  • Heavy duty 2" stainless steel tripod with height index marks for quick leveling
  • Longer clutch levers to make tightening and loosening of clutches easier
  • Tracks past the meridian allowing seamless imaging
  • Celestron two year warranty

Computer Features

  • Proven NexStar computer control technology
  • Flash-upgradeable firmware
  • 40,000 objects in the database including complete Messier, NGC, and IC catalogues
  • 100 user-definable objects
  • Expanded information on over 200 objects
  • Two-line, 16-character LCD with red LED backlighting
  • Buttons are red LED backlit
  • All-star Polar alignment
  • Alignment: Two-star + optional calibration stars, QuickAlign, 1-Star, Last Alignment, Solar System Align
  • Solar System alignment method allows to view the moon and planets during the day
  • Tandem mode allows to star align the mount even when positioned for tandem scope use
  • Nine Slew Speeds: 5°/sec, 2°/sec, 1°/sec, 64x, 16x, 8x, 4x, 1x, .5x
  • Custom Rate 9 feature allows to set maximum slew rate
  • NexRemote advanced telescope control software
  • USB 2.0 port for external computer control and firmware updates
  • ASCOM compatible
  • Software Features include: Mount Calibration, Database Filter Limits, Hibernate, five Alignment Procedures, and user-defined slew limits
  • GPS Upgradable via SkySync GPS Accessory
  • Includes 12v car plug-in adapter
  • Requires 12v DC 3.2A (Tip positive)
  • TheSky® Planetarium software with 10,000 object database, printable sky maps and enhanced images

Weights and Dimensions

  • Carrying capacity 25kg (55lbs) (not including counterweights)
  • Tripod Weight: 8.7kg (19.2lbs)
  • Mount Weight: 20kg (44lbs)
  • Counterweight: 5kg (11lbs) x 2
  • Total Weight: 38.7kg (85.2lbs)
  • Mount Height: 41cm (16")
  • Tripod Height: 85-147cm (33.5-57.8")
  • Tripod Height with head: 120-196cm (47.25"-77.5")
  • Tripod Legs Outside Diameter: 50mm (2") and 38mm (1.5")