Celestron - CGX-L Equatorial (EQ) Mount - 91531

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  • The Celestron CGX L is part of a 21st century generation of EQ mounts, designed for astrophotographers and high speed USB accessories.

  • Capable of carrying up to 75 pounds and with improved worm gears and a belt driven system, the CGXL offers improved tracking accuracy, minimized backlash and consistent performance.

  • Smart design features like a shorter mount head, built in handles, an ultra heavy duty 2.75" tripod with lower stance, adjustable dual saddle plate and expanded latitude range make this a versatile mount with professional level performance.

SKU: CEL-91531
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Product Description

Celestron CGX-L Equatorial Mount

Part of the next generation of equatorial mounts from Celestron, the CGX-L features a robust load capacity of 75 pounds with an excellent load to weight ratio.  Designed with imaging in mind, you will find additional auxiliary ports and an autoguiding port on the dec for improved cable management.   Worm gears have been upgraded to a larger (compared to previous models) 144mm gear for excellent tracking and slewing with heavy loads and smart design improvements like a longer saddle plate and 2.75" provide a highly stable and secure platform for your large aperture telescope.  

With a shorter, more compact mount head and built in handles, the CGX-L is surprisingly easy to carry and assemble.  As part of it's ergonomic design, the adjustment knobs are designed for reduced friction and a stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. Teflon bearings on the azimuth adjustment allow you to adjust even with a full load on the mount and an the latitude scale is large, clear and easy to read. 

CGX-L Features:

  • 75 pound load capacity
  • A shortened mount profile creates a more compact mount that is easier to carry and assemble but also improves the mounts central gravity boosting load capacity.
  • High torque motors with better slewing and tracking ability.
  • A belt driven motor minimizes backlash but remains smooth even when handling a large telescope.  A clear window allows you to easily monitor the motor.  
  • Spring loaded brass worm wheel and stainless steel worm gear.  By spring loading the motor worm and gear, gear friction is greatly reduced and optimal gear mesh is maintained. 
  • Internal cabling keeps your mount free from cable clutter and reduces the chance of snagging wiring.  The power input port and accessory ports stay in one position at all times.  
  • The CGX-L has built-in physical hard stops and optical hard stops eliminating the chance that the counterweight shaft will strike the leg.   
  • Designed for easy remote control, home sensors allow you to start in the index position no matter what position the mount was in when it was powered off. 
  • Includes a USB 2.0 Nexstar+ hand controller equipped with Celestron's PWI telescope control software designed in partnership with PlaneWave Instruments, featuring multi-point mount modeling for precision pointing accuracy. 
  • Includes Celestron's All Star Polar Alignment for incredibly accurate guided polar alignment allowing you to align with any bright fixed object in the night sky.  There's no need for additional polar finders or accessories.  
  • The head of the Celestron CGX-L is fully adjustable allowing you to slide the telescope perfectly over the center of gravity and take full advantage of the 3º-65º latitude range.
  • Includes a dual saddle plate to accommodate both D and V series dovetail plates. 
  • +20º of additional tracking past the meridian on either side
  • The 2.75" steel tripod has been newly designed for the CGX-L with a wider stance and a lower minimum height than it's predecessors.  
  • 2 autoguider ports for better cable management.  
  • PEC sensor and PPEC ready. 
  • A threaded power connector to ensure your mount never comes disconnected at the base. 
  • A red lit on/ off switch makes it easy to find in the dark. 
  • Internal Real Time Clock. 


Name Celestron - CGX-L Equatorial (EQ) Mount - 91531
Manufacturer Celestron
UPC 050234915311
Model CEL-91531
In The Box CGX-L Mount 2.75" Adjustable Tripod (1) 22 lb. Counterweight Nexstar+ Hand Controller DC Power Cord 8mm Allen Wrench, Housed on Mount Handle
Alignment Procedures All Star
Backlash Compensation Yes
Computer Hand Control Nexstar + USB 2.0 Controller
Computer Interface USB
Control Handpad Yes
Cord Management Yes
Counterweights 1 x 22 lb.
Counterweight Shaft Yes
Dovetail Compatibility D or V (CGE or AVX)
Drive electronics Fully Computerized GoTo
Head Rotatable Yes
Internal Clock Yes
Latitude Range 3-65 degrees
Length Leg Length 35.75” to 52.75”
Maximum Load 75 lbs.
Maximum Slewing Speed 3.4°/sec (800x)
Motor Drive Belt Driven
Mount CGX-L
Mount Weight Approximately 56 pounds without counterweight shaft and weights
Payload Capacity 75 lbs.
Periodic Error Control Yes
Periodic Error Correction Yes
Ports ST4 Autoguider
Power Supply DC included
Tripod 2.75" Steel Adjustable
Tube Attachment Dual Saddle
Warranty 2 Year
Worms Stainless Steel
Worm Wheels 144mm


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In the Box

CGX-L Mount
2.75" Adjustable Tripod
(1) 22 lb. Counterweight
Nexstar+ Hand Controller
DC Power Cord
8mm Allen Wrench, Housed on Mount Handle