The iOptron CEM40-EC combines portability with professional precision. At only 8.2 kg, it weighs surprisingly little, but it can handle up to 18 kg of optics and accessories carry. Ideal for mobile observers as well as a permanent setup in your garden.
Powerful performance in a lightweight design
Thanks to the excellent balance between weight and carrying capacity, you will effortlessly take this mount to any dark sky. The unique CEM design distributes the weight perfectly, making the mount more stable and quiet - even in long exposures.
Smart alignment in minutes
The built-in iPolar electronic polar finder makes alignment fast and easy. Even if the North Star is not visible, iPolar helps you align perfectly. Just plug in your laptop, follow the directions, and you're ready to observe or photograph.
Neat, reliable and user-friendly
No more tangled cables - it internal cable system keeps everything safe inside. The large clamps make it easy to disconnect the axles, even with gloves on. The Universal Self-Centering Saddle ensures precise mounting of your telescope and works with Both Losmandy and Vixen swallowtails.
High precision without guiding
The EC version has high-quality encoders on both axes that correct tracking without error. The accuracy is below 0.25 arc second, which often eliminates the need for guiding in astrophotography.
This keeps your shots razor sharp, even during long sessions.
Smart control with GoTo system
With the Go2Nova 8407+ hand controller find any object at the touch of a button. The built-in GPS automatically fills in time, date and location. The screen is heated against condensation and the database contains more than 359,000 celestial objects.
Whether you are looking for planets, nebulae or galaxies - you will find them instantly.
Quiet drive, low power consumption
The stepper motors move smoothly and almost silently. That makes the CEM40-EC ideal for balcony observations or quiet nights in the field. You get smooth tracking, accurate tracking movements and longer battery life.
Strongly built for years of use
The CNC-machined aluminum housing looks sleek and remains sturdy in any environment. In short: the CEM40-EC is made for serious observers and astrophotographers looking for reliable performance in a compact size.
Specifications
Capacity
| Feature | Value |
|---|---|
| Max. load capacity | 18 kg |
| Counterweight(s) | 1 × 4.5 kg |
Construction & Design
| Feature | Value |
|---|---|
| Series | CEM40 |
| Type | Mount |
| Design | Equatorial |
| Mounting weight | 8.2 kg |
| Material shafts | Steel |
| Worm gear material | Aluminum |
| Material worm | Brass |
| Counterweight bar | 280 mm |
| Counterweight bar diameter | 28 mm |
| Mounting saddle | Losmandy & Vixen compatible |
Drive & Accuracy
| Feature | Value |
|---|---|
| Drive type | Wormwheel |
| Engine | Stepper motor (1.8° / 128 microsteps) |
| Encoder | Yes (High Precision) |
| Accuracy | < 0.25 arc second |
| PEC correction | Yes |
| GoTo system | Yes |
| Software | Go2Nova 8407+ |
| Object database | 359.000+ |
| Autoguiding | Yes (ST-4 port) |
Ease of use
| Feature | Value |
|---|---|
| Polar alignment | iPolar electronic viewfinder |
| Pole adjustment | 0° - 60° |
| Azimuth fine adjustment | ±6° |
| Hand controller | Included (heated screen) |
| Interfaces | USB, Autoguider |
| GPS | Yes |
| WLAN | Optional |
| Language | English |
Nutrition & Power
| Feature | Value |
|---|---|
| Input voltage | 12V DC |
| Current | 5A |
| Cable Management | Internal |
Tripod
| Feature | Value |
|---|---|
| Type | Steel tripod |
| Diameter of legs | 38 mm |
| Material | Steel |
| Stability | Very stable, low vibration |
Included
| Section | Description |
|---|---|
| Mount | iOptron CEM40-EC |
| Tripod | Steel tripod |
| Counterpoint | 1 × 4.5 kg |
| Hand controller | Go2Nova 8407+ |
| Pole finder | iPolar electronic |
| Transport case | Yes |
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