The iOptron CEM40 is built for anyone who wants to combine power, precision and portability. With only 8.2 kg carry it effortlessly to dark observing sites, while it can carry telescopes up to 18 kg firmly supports. So you get maximum performance without the hassle of heavy equipment.
Smart and accurate alignment
Thanks to the integrated iPolar electronic polar finder you adjust the mount to north in lightning speed - even if the North Star is not visible. All you need is a laptop or PC, and your alignment will be perfect in minutes.
Stable, smooth and easy to use
The large clamps allow easy operation even with gloves on. Thus, you can move the axes freely without effort. The internal cable system Keeps your wiring neatly tucked away - no loose cables to snag or break.
Designed for precision
The new Universal Self-Centering Saddle Provides a stable, self-centering mount for your telescope. Compatible with both Losmandy as Vixen dovetails, so you can mount directly without adapters.
Durable construction, quiet performance
The CNC-machined aluminum housing looks sleek and feels solid. Inside, quiet stepper motors For smooth tracking - ideal when working on a balcony or in a quiet garden.
Smart control with GoTo
With the Go2Nova 8407+ hand controller you have access to more than 359,000 objects. The illuminated screen stays bright thanks to the built-in heater. The integrated 32-channel GPS saves you entering date and location - just set up and start.
Perfect for astrophotography
The CEM40 is also available as CEM40-EC with high-resolution encoders. These correct the worm error in real time and achieve a precision of less than 0.25 arc seconds. So you can take pictures without guiding - just sharp, steady and razor sharp.
In short: the iOptron CEM40 offers everything you're looking for in a modern equatorial mount - powerful, precise and surprisingly portable.
Specifications
Capacity
| Feature | Description |
|---|---|
| Max. load capacity | 18 kg |
| Counterweight(s) | 1 × 4.5 kg |
Interfaces
| Feature | Description |
|---|---|
| Connections | USB, Autoguider |
| Language | English |
Assembly & Mechanics
| Feature | Description |
|---|---|
| Saddle | Losmandy & Vixen compatible |
| RA axis diameter | 45 mm |
| DEC axis diameter | 45 mm |
| Wormwheel (RA/DEC) | 110 mm / 110 mm, 216 teeth |
| Worm shaft diameter | 17 mm |
| Counterweight bar | 28 mm diameter, 280 mm length |
| Weight of the mount | 7.2 kg |
Drive
| Feature | Description |
|---|---|
| Engine Type | Stepper motors (1.8°/128 microsteps) |
| Drive type | Wormwheel |
| PEC correction | Yes |
| Encoder | No (EC version: Yes) |
| Power supply | 12V / 5A |
Equipment
| Feature | Description |
|---|---|
| GoTo System | Yes, Go2Nova 8407+ |
| Database | 359,000 objects |
| GPS | Built-in (32-channel) |
| Polar alignment | iPolar |
| Hand controller | Yes |
| Tripod | Steel, 38 mm legs |
| Pole finder | Yes |
| WLAN | Optional |
General
| Feature | Description |
|---|---|
| Series | CEM40 |
| Type | Equatorial mount |
| Accuracy tracking | ±7″ |
| Azimuth fine adjustment | ±6° |
| Suitable for | Astrophotography, visual observation |
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