The iOptron CEM40 offers a unique balance of portability, power and precision. Weighing only 8.2 kg Can this mount accommodate telescopes up to 18 kg carry. That means: solid, reliable tracking without having to lift a heavy setup.
Smart and user-friendly design
Thanks to the Center-Balanced Equatorial Mount (CEM).-design keeps the center of gravity perfectly centered. This gives you more stability and less vibration - exactly what you need for sharp, stable images.
The built-in iPolar electronic polar finder makes alignment easy, even when the North Star is not visible. Plug in your laptop, follow the software, and you'll be ready to observe in minutes.
Easy to operate even in the dark
The Go2Nova 8407+ hand controller has a large, backlit screen with built-in heating against condensation. The database contains more than 359,000 objects, allowing you to find any desired celestial body at the touch of a button. The integrated 32-channel GPS saves time - no more manual entry of date, time or location.
Quiet, precise and reliable
The stepper motors operate virtually silently and consume little power - ideal for balcony observations or mobile setups. The internal cable system prevents loose wires and damage during use.
The Universal Self-Centering Saddle fits both Vixen- as Losmandy-rails. This makes it easy to switch between different telescopes without worrying about alignment.
Ready for astrophotography
Want to raise the bar even higher? The CEM40-EC-variant has high-resolution encoders on both axes. These correct the periodic error in real time and provide an accuracy of less than 0.25 arc seconds. That means: super-smooth tracking - without autoguiding.
Light, stable and mobile
The mount comes with the LiteRoc stainless steel tripod, specially designed for maximum stability with minimal weight. The thicker legs and sturdy clamps keep your setup stable even during long exposures.
The iOptron CEM40 is built for astrophotographers and observers who want serious performance in a portable, modern form.
Specifications
Capacity
| Feature | Description |
|---|---|
| Max. load capacity | 18 kg |
| Weight of the mount | 8.2 kg |
| Counterweight(s) | 1 × 4.5 kg |
| Counterweight bar | 280 mm, diameter 28 mm |
| Pole adjustment | 0° - 60° |
| Azimuth fine adjustment | ±6° |
Mechanics
| Feature | Description |
|---|---|
| Design | Center-Balanced Equatorial Mount |
| Drive type | Wormwheel |
| Material shafts | Steel |
| Diameter RA/DEC axis | 45 mm |
| Wormwheel (RA/DEC) | 216 teeth, Ø 110 mm |
| Bearing diameter (RA/DEC) | 68 mm |
| Encoder | No (optional for EC version) |
| PEC correction | Yes |
| Accuracy | ±7 arc seconds |
Engine & Electronics
| Feature | Description |
|---|---|
| Engine Type | Stepper motors (1.8°/128 microsteps) |
| Input voltage | 12V DC |
| Power consumption | 5A |
| Cable guide | Internal |
| Tracking speeds | Sidereal, Sun, Moon |
Controls & Software
| Feature | Description |
|---|---|
| GoTo System | Go2Nova 8407+ |
| Database | 359,000 objects |
| Hand controller | Yes (with backlighting and heating) |
| GoTo language | English |
| GPS | Yes, 32-channels |
| WiFi | Optional |
| Autoguiding | ST-4 compatible |
| PC control | Yes, via USB |
| Firmware updates | Yes |
Polar alignment
| Feature | Description |
|---|---|
| Pole finder | iPolar electronic |
| Easy Polar Alignment | Yes |
| Polar alignment without a pole star | Yes |
Tripod
| Feature | Description |
|---|---|
| Type | LiteRoc stainless steel tripod |
| Diameter of legs | 45 mm |
| Material | Steel |
| Accessory holder | Yes |
| Transport case | No |
General
| Feature | Description |
|---|---|
| Series | CEM40 |
| Type | Mount |
| Design | Equatorial |
| Color | Black/Red |
| Total weight | 18.5 kg |
| Polar alignment | iPolar |
| Level | Yes |
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