Choosing an equatorial mount with a belt drive means weighing payload, control style, and setup demands—not just looking for a belt in the drive train. I’d start with the Celestron CGX for its 55 lb capacity, the SkyWatcher AZ-EQ6 for its EQ/Alt-Az flexibility, and the iEXOS-100-2 for tablet-based control in a lighter, more approachable system. The MirroSky GX35 takes a different route by bundling a guide scope and camera, but its listed payload figures conflict, so buyers should verify capacity before committing.
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These four mounts serve distinct jobs. High payload and a traditional hand controller matter more on the CGX; dual observing modes set the AZ-EQ6 apart; the iEXOS-100-2 emphasizes app control and belt-driven stepper motors; and the GX35 packages imaging components with portability. I compare them by how their belt-drive arrangements fit those real choices, while flagging setup complexity and missing or inconsistent specifications that can change a buying decision.
Key Takeaways
- Celestron CGX: the highest stated capacity here at 55 lb, suited to heavier telescope setups, but its setup is a bigger ask for beginners.
- SkyWatcher AZ-EQ6: combines EQ and Alt-Az operation with belt-drive PPEC and dual encoders; its 44 lb head is a substantial transport burden.
- Explore Scientific iEXOS-100-2: pairs quiet stepper-motor belt drives with worm gears and tablet control, but full app operation depends on a compatible tablet.
- MirroSky GX35: includes an ED guide scope, camera, and both mount modes, yet its supplied details give conflicting payload capacities.
- For imaging priorities, compare the drive and control ecosystem as well as capacity: none of these listings supplies enough measured tracking data to rank real-world accuracy.
| Celestron CGX Computerized German Equatorial Mount & Tripod, 55 lb Payload |  | Best Overall for Heavier Telescope Setups | Mount type: German equatorial | Payload capacity: 55 lb | Motor type: High-torque servo motors | VIEW ON AMAZON | See Our Full Breakdown |
| SkyWatcher AZ-EQ6 Mount – Multi-Purpose GoTo SynScan Dual OTA – EQ & Dual Alt-Az Modes – 44 lb Payload Capacity |  | Best for Switching Between Imaging and Visual Use | Mount modes: Equatorial and Alt-Az; dual OTA capability | Payload capacity: 44 lb | Mount head weight: 44 lb | VIEW ON AMAZON | See Our Full Breakdown |
| iEXOS-100-2 PMC‑Eight Equatorial Tracker System Tripod and Mount for Astrophotography with WiFi and Bluetooth Compatibility |  | Best for Tablet-Based Control and Quiet Belt-Driven Motion | Mount type: Equatorial mount | Control system: Explore Scientific PMC-Eight with eight independent CPUs | Drive arrangement: Dual-axis clutched worm gears with stepper-motor belt drives | VIEW ON AMAZON | See Our Full Breakdown |
| MirroSky GX35 Smart Equatorial and Alt-Az Mount with 53 mm ED Guide Scope and Imaging Camera |  | Best All-in-One Package for Entry-Level Imaging Workflows | Mount modes: Equatorial and Alt-Az | Stated payload: 22 lb (10 kg); supplied details also contain a conflicting capacity claim | Mount weight: 8.8 lb (4 kg) | VIEW ON AMAZON | See Our Full Breakdown |
| equatorial mounts with belt drive system | Payload capacity | Drive system | Mount type | Controller |
|---|---|---|---|---|
| Celestron CGX Computerized Ger | 55 lb | Belt drive | German equatorial | NexStar+ computer hand controller |
| SkyWatcher AZ-EQ6 Mount | 44 lb | Belt drive with PPEC | — | SynScan hand controller |
| iEXOS-100-2 PMC‑Eight Equatori | Not specified in the supplied product details | — | Equatorial mount | — |
| MirroSky GX35 Smart Equatorial | — | RA worm gear with 144-tooth main gear and synchronous belt drives | — | — |
More Details on Our Top Picks
Celestron CGX Computerized German Equatorial Mount & Tripod, 55 lb Payload
The CGX is my lead choice for buyers who need a high stated payload and want a computerized German equatorial mount rather than a compact, app-first system. Its 55 lb rating is the largest specified in this group, giving it more stated headroom than the SkyWatcher AZ-EQ6 at 44 lb and twice the GX35’s stated 22 lb figure—though the GX35 description also contains a conflicting capacity claim. That difference makes the CGX the clearest fit here for a larger telescope and accessories, provided the complete setup stays within the manufacturer’s load guidance.
Its high-torque servo motors and belt drive are intended to support controlled motion and smoother tracking with less backlash. The NexStar+ hand controller also gives this mount a more self-contained operating style than the tablet-led iEXOS-100-2: its database lists 40,000 objects, alongside guided tours and custom filters. That can suit observers who prefer a dedicated controller to depending on a phone or tablet. The database is a navigation aid, however, not a substitute for a suitable optical setup or a careful alignment.
The tradeoff is complexity. This is a substantial computerized mount, and the product information flags setup as challenging for beginners. Compared with the dual-mode AZ-EQ6, the CGX is a more focused pick for an EQ system with a larger stated payload, not a mount selected for switching between EQ and Alt-Az use. I’d skip it if portability, a simple first setup, or bundled imaging accessories matter more than capacity.
Pros:- 55 lb stated payload is the highest capacity listed among these four mounts.
- High-torque servo motors and a belt drive are designed for controlled, smoother movement.
- NexStar+ hand controller includes a 40,000-object database, guided tours, and custom filters.
- Dedicated controller offers an alternative to the tablet-dependent ExploreStars system.
Cons:- Setup complexity may be challenging for beginners.
- Its large-payload orientation is a poor match for buyers prioritizing a compact, light system.
- The listing does not provide a mount weight or quantified tracking-accuracy figure.
Best for: Observers and imaging-focused buyers building a heavier telescope setup who want a computerized EQ mount with a dedicated hand controller.
Not ideal for: First-time users seeking a simple setup, buyers who prioritize compact travel, or anyone needing integrated Alt-Az operation.
- Mount type:German equatorial
- Payload capacity:55 lb
- Motor type:High-torque servo motors
- Drive system:Belt drive
- Controller:NexStar+ computer hand controller
- Object database:40,000 objects
Our verdict“I’d choose the CGX when stated payload and a traditional computerized controller outweigh ease of setup and portability.”
SkyWatcher AZ-EQ6 Mount – Multi-Purpose GoTo SynScan Dual OTA – EQ & Dual Alt-Az Modes – 44 lb Payload Capacity
The AZ-EQ6 is the most flexible pick for people who want a mount that can work in equatorial and Alt-Az modes. That changes the buying decision: compared with the EQ-only CGX, it offers another operating configuration for visual observing, while retaining an EQ option for imaging. Its stated 44 lb payload sits below the CGX’s 55 lb, but above the GX35’s listed 22 lb. The iEXOS-100-2 listing gives no capacity figure, so I can’t make a direct capacity comparison with that model.
For belt-drive buyers, the notable detail is PPEC paired with a belt drive, alongside dual encoders and Freedom Find technology. The supplied description says the belt system supports smooth tracking and quiet slewing; the encoders allow manual movement without losing alignment. That combination distinguishes it from the CGX’s more conventional single-mode proposition and the app-led iEXOS-100-2. A SynScan hand controller is included, so the mount is not dependent on a tablet for its listed control method.
Its flexibility comes with a real handling cost: the head is listed at 44 lb, and the full assembly is large. It is also a more involved choice for someone learning mount operation, particularly if they have no use for both modes. I’d favor it over the CGX when switching configurations matters more than the extra 11 lb of stated payload; I’d favor the CGX when capacity is the clearer priority. Buyers who need a lighter, easier-to-carry system should look elsewhere in this group.
Pros:- Supports both EQ and Alt-Az modes for different observing tasks.
- 44 lb stated payload exceeds the GX35’s listed capacity.
- Belt drive with PPEC is specified for smooth tracking and quiet slewing.
- Dual encoders with Freedom Find support manual movement without losing alignment.
Cons:- The 44 lb mount head makes transport and setup demanding.
- Dual-mode operation can add a learning curve for newer users.
- Its payload rating is lower than the CGX’s 55 lb figure.
Best for: Experienced observers who want one substantial mount for EQ imaging and Alt-Az visual use, with manual repositioning that retains alignment.
Not ideal for: Travel-focused buyers, beginners who want minimal operating complexity, or users who need the highest stated payload in this comparison.
- Mount modes:Equatorial and Alt-Az; dual OTA capability
- Payload capacity:44 lb
- Mount head weight:44 lb
- Drive system:Belt drive with PPEC
- Encoders:Dual encoders with Freedom Find
- Controller:SynScan hand controller
- Included counterweights:Two 11 lb counterweights
- Warranty:Two-year limited warranty
Our verdict“I’d pick the AZ-EQ6 over the CGX when dual-mode flexibility matters more than maximum stated capacity.”
iEXOS-100-2 PMC‑Eight Equatorial Tracker System Tripod and Mount for Astrophotography with WiFi and Bluetooth Compatibility
The iEXOS-100-2 is the natural choice for buyers who prefer wireless tablet control and a belt-driven stepper-motor system over the CGX’s dedicated NexStar+ hand controller. Its PMC-Eight system uses eight independent CPUs, while dual-axis clutched worm gears work with quiet stepper motor belt drives. Those details make it a more electronics- and app-oriented option than the other mounts here; the ExploreStars app connects over WiFi or Bluetooth for alignment and control.
That system can appeal to an astrophotographer who wants to control the mount from a tablet rather than add another hand controller to the workflow. Compared with the AZ-EQ6, the iEXOS-100-2 is presented as an equatorial tracker, not a dual-mode mount, and its description does not list a payload capacity. That missing number is a significant limitation when matching a telescope, camera, guide equipment, and accessories. I would confirm the rated load and suitability for the intended optical tube before choosing it for a specific rig.
There is no reason to assume app control makes the setup beginner-proof: the supplied information also flags a learning curve, and full functionality requires a compatible tablet. Unlike the GX35, this listing does not include a guide scope or camera, so those need to be addressed separately. I’d pick it over the GX35 for its clearly described control ecosystem and belt-driven stepper arrangement only after confirming capacity; I’d choose the GX35 instead if an included guide scope and camera are the priority and its payload ambiguity is resolved.
Pros:- Quiet stepper motor belt drives work with dual-axis clutched worm gears.
- PMC-Eight uses eight independent CPUs for mount control.
- WiFi and Bluetooth enable alignment and operation through ExploreStars on a tablet.
- Offers a distinct control approach from the hand-controller-led CGX and AZ-EQ6.
Cons:- The supplied specifications do not state a payload capacity.
- Full functionality depends on a compatible tablet.
- Setup may be challenging for beginners.
- The listing does not include the GX35’s guide scope and imaging camera.
Best for: Tablet owners who want WiFi or Bluetooth mount control, quiet stepper-motor belt drives, and an equatorial platform for astrophotography.
Not ideal for: Buyers without a compatible tablet, anyone needing a clearly stated payload rating before purchase, or users wanting included imaging hardware.
- Mount type:Equatorial mount
- Control system:Explore Scientific PMC-Eight with eight independent CPUs
- Drive arrangement:Dual-axis clutched worm gears with stepper-motor belt drives
- Connectivity:WiFi and Bluetooth
- Control app:ExploreStars
- Compatible device:Tablet
- Payload capacity:Not specified in the supplied product details
Our verdict“I’d consider the iEXOS-100-2 for tablet-led control, but only after verifying its payload rating against the complete setup.”
MirroSky GX35 Smart Equatorial and Alt-Az Mount with 53 mm ED Guide Scope and Imaging Camera
The GX35 stands apart by combining EQ and Alt-Az modes with a 53 mm ED guide scope and an integrated imaging camera. That bundled equipment makes it the most self-contained imaging-oriented package in this group: the CGX and AZ-EQ6 emphasize larger stated payloads, while the iEXOS-100-2 emphasizes its app and motor-control system rather than included imaging hardware. The GX35 also includes a counterweight, shaft, cables, and power supply, which may reduce the number of components a buyer needs to source separately.
Its drive description names an RA worm gear and synchronous belt drives, with a 144-tooth main gear. It weighs 8.8 lb and lists a 22 lb payload capacity, giving it a more portable profile than the AZ-EQ6’s 44 lb head. But the product details also contain a conflicting payload claim, so the 22 lb figure should not be treated as settled without checking the current manufacturer specification. That uncertainty matters especially when the planned load includes a telescope, camera, guide scope, and other accessories.
The camera is specified as a Sony IMX662 CMOS unit with a 2.1 MP, 1/2.8-inch sensor; buyers should check that this matches their imaging goals rather than assuming a bundled camera suits every target. The GX35 also requires a 12 V, 3 A power input and uses the MirroSky app on iOS or Android. I’d choose it over the iEXOS-100-2 for included guide and camera equipment, but not before resolving its capacity discrepancy. For heavy optical tubes, the CGX or AZ-EQ6 offers a clearer stated capacity.
Pros:- Includes a 53 mm ED guide scope and Sony IMX662 imaging camera.
- Supports both equatorial and Alt-Az modes.
- 8.8 lb mount weight is far below the AZ-EQ6 head’s listed 44 lb.
- Includes counterweight, shaft, cables, and power supply.
Cons:- Product details give conflicting payload capacities; verify before matching a telescope.
- Requires a 12 V, 3 A power input.
- The included camera’s 2.1 MP, 1/2.8-inch sensor may not fit every imaging plan.
Best for: Buyers who want a comparatively light EQ/Alt-Az mount package with an included guide scope, imaging camera, and setup accessories.
Not ideal for: Anyone whose telescope load is close to the listed capacity, buyers who need unambiguous payload information, or those without access to 12 V, 3 A power.
- Mount modes:Equatorial and Alt-Az
- Stated payload:22 lb (10 kg); supplied details also contain a conflicting capacity claim
- Mount weight:8.8 lb (4 kg)
- Drive system:RA worm gear with 144-tooth main gear and synchronous belt drives
- Guide scope:53 mm ED
- Imaging camera:Sony IMX662 CMOS, 2.1 MP, 1/2.8-inch sensor
- Power input:12 V, 3 A
- App compatibility:iOS and Android
- Included accessories:Guide scope, camera, cables, power supply, counterweight, and counterweight shaft
Our verdict“I’d shortlist the GX35 for its bundled imaging gear and lighter build, but only after confirming its true payload limit.”
How We Picked
I ranked these mounts by how clearly their belt-drive systems serve a defined observing or imaging setup, then considered payload, control method, operating modes, included equipment, and practical drawbacks. A belt drive can reduce backlash and help deliver smoother motion, but that alone does not prove tracking accuracy: gear quality, alignment, load balance, setup, and guiding all play a part. I do not treat a belt as a guarantee of long-exposure performance.
The CGX earns the lead for buyers who need the largest stated payload and a conventional computerized setup. The AZ-EQ6 follows for people who value its unusual combination of EQ and Alt-Az operation, though its size and weight make it a less convenient choice. The iEXOS-100-2 is a distinct app-controlled option with worm gears and belt-driven stepper motors, while its supplied information does not state a payload figure. The GX35 ranks fourth not because its package lacks appeal, but because the conflicting capacity details make equipment matching harder. I assess each against the others rather than assuming the same mount suits every user.
Product descriptions supplied the specifications in this guide. Where they do not provide a figure—such as a payload for the iEXOS-100-2—I say so instead of filling the gap with an estimate. Buyers should confirm current compatibility, included accessories, and any unclear capacity claims with the seller or manufacturer before ordering.
| equatorial mounts with belt drive system | Mount type | Drive system | Controller | Mount modes |
|---|---|---|---|---|
| Celestron CGX Computerized Ger | German equatorial | Belt drive | NexStar+ computer hand controller | — |
| SkyWatcher AZ-EQ6 Mount | — | Belt drive with PPEC | SynScan hand controller | Equatorial and Alt-Az; dual OTA capability |
| iEXOS-100-2 PMC‑Eight Equatori | Equatorial mount | — | — | — |
| MirroSky GX35 Smart Equatorial | — | RA worm gear with 144-tooth main gear and synchronous belt drives | — | Equatorial and Alt-Az |
Factors to Consider When Choosing Equatorial Mounts With Belt Drive Systems
I’d choose among these mounts by starting with the complete telescope load and the way I want to control the system. A belt drive is one part of the motion system, not a standalone promise of imaging performance. Capacity, gear arrangement, balance, alignment, power, and software all affect whether a mount is a good match.
Match capacity to the complete imaging load
Count the telescope and everything mounted with it: camera, guide scope, adapters, finder, and other accessories. The CGX lists the largest capacity at 55 lb, followed by the AZ-EQ6 at 44 lb and the GX35 at 22 lb, though the GX35 listing contains a conflicting capacity claim. The iEXOS-100-2 details provided here do not state a payload figure, so I would confirm it before purchase. A headline capacity alone does not tell you how a particular long or heavy setup will behave; check manufacturer guidance for the intended configuration.
Read the drive description, not just the belt label
These products pair belts with different mechanisms. The CGX lists high-torque servo motors and a belt drive; the AZ-EQ6 adds PPEC and dual encoders; the iEXOS-100-2 combines stepper-motor belt drives with dual-axis clutched worm gears; and the GX35 specifies an RA worm gear and synchronous belt drives. Those differences describe how each system is built and controlled, but the supplied details do not provide comparable measured tracking-error figures. I would not treat “belt drive” as a guarantee of a particular exposure length or tracking result.
Choose the control style you will actually use
The CGX and AZ-EQ6 include dedicated hand-controller systems: NexStar+ and SynScan, respectively. The iEXOS-100-2 relies on the ExploreStars app with WiFi or Bluetooth and a compatible tablet. The GX35 works with the MirroSky app on iOS and Android. App control may suit a tablet-based workflow, while a hand controller offers a separate interface; neither is automatically easier for every user. Consider device availability, software familiarity, and whether you want a tablet at the telescope.
Decide whether dual-mode operation is useful
The AZ-EQ6 and GX35 both list EQ and Alt-Az modes, while the CGX and iEXOS-100-2 are described as equatorial mounts. If you want one mount to serve different observing styles, dual-mode flexibility may matter more than the CGX’s higher stated payload. If your use is firmly equatorial, paying attention to capacity, tracking setup, and control may be more useful than choosing a mount for an additional mode you will not use.
Include portability, power, and accessories in the decision
The GX35 is listed at 8.8 lb and includes a guide scope, camera, counterweight, and power supply, though its separate 12 V, 3 A requirement still matters at the observing site. The AZ-EQ6 head alone is listed at 44 lb, a major consideration for frequent transport. The supplied CGX and iEXOS-100-2 details do not state comparable mount weights, so check those before planning a portable rig. Included accessories can save separate sourcing, but only when they match the intended telescope and imaging workflow.
Frequently Asked Questions
What does a belt drive contribute to an equatorial mount?
A belt transfers motion between parts of the drive system and can help reduce backlash or produce smoother, quieter movement, depending on the full design. The products here combine belts with different motors, gears, and control systems, so the belt alone does not establish tracking accuracy. I’d also compare capacity, worm-gear details, control options, alignment needs, and manufacturer tracking data where available.
Which mount has the highest stated payload capacity?
The Celestron CGX lists a 55 lb payload, the highest clear figure among these four descriptions. The SkyWatcher AZ-EQ6 lists 44 lb, while the MirroSky GX35 lists 22 lb but also contains conflicting capacity information. No payload figure appears in the supplied iEXOS-100-2 specifications. I’d verify the appropriate rating with the manufacturer and count the complete telescope and accessory load before buying.
Which of these mounts supports both EQ and Alt-Az operation?
The SkyWatcher AZ-EQ6 and MirroSky GX35 are described as supporting both equatorial and Alt-Az modes. The AZ-EQ6 has a higher stated payload but a 44 lb mount head, while the GX35 is listed at 8.8 lb and includes a guide scope and camera, with a capacity discrepancy to resolve. The CGX and iEXOS-100-2 descriptions identify them as equatorial mounts rather than dual-mode systems.
Which option is most suitable for a tablet-based control setup?
The Explore Scientific iEXOS-100-2 is the clearest tablet-control pick: its ExploreStars app connects through WiFi or Bluetooth, and the product details specify tablet compatibility. The MirroSky GX35 also works with an app on iOS and Android. The CGX and AZ-EQ6 instead list dedicated NexStar+ and SynScan hand controllers. I’d choose based on the interface I prefer, while checking device compatibility and any app requirements before purchase.
Should I choose the GX35 because it includes a guide scope and camera?
The included 53 mm ED guide scope and Sony IMX662 camera make the GX35 a convenient package if those components fit your imaging plan. Its 8.8 lb mount weight also distinguishes it from the much heavier AZ-EQ6 head. However, the GX35 product details give conflicting payload capacities, so I would confirm the actual limit before adding a telescope and accessories. If a clearly stated higher capacity matters more, the CGX or AZ-EQ6 is easier to compare on the information supplied.
Conclusion
For a heavier telescope and a dedicated computerized hand controller, I’d start with the Celestron CGX, while accepting its more demanding setup. For buyers who want one mount for EQ imaging and Alt-Az visual use, the SkyWatcher AZ-EQ6 offers the clearest dual-mode case, provided its substantial weight is manageable. If tablet control and quiet belt-driven stepper motion are the priority, the iEXOS-100-2 is worth a closer look after its payload rating is confirmed. The MirroSky GX35 makes the most sense for someone who values a lighter package with a guide scope and camera included; I would verify its conflicting capacity details before matching it to any telescope. My final choice would come down to load and workflow first, with belt-drive features as one part of that decision.
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