Recognizing the growing demand for an accurate and stable, equatorial mount with the versatility to carry larger instruments and more complex imaging arrays, we created the iOptron CEM120EC. It offers the benefits of our revolutionary "center balance" design: stability, accuracy, and smooth mechanical operation, while capable of carrying a payload up to 115 lbs (52 kg). The "center balance" design's natural stability is due to its focusing the mount along with payloads weight directly over the center of the pier or tripod. Along with the stability aspect, the CEM120 features an advanced cable management system consisting of more ports in more locations preventing tangle ups and reducing the chance of fractured cables. They also add some new features to the CEM family like Wi-Fi and LAN for remote operation and easy to use, reliable clutches on both axes.
The CEM120EC2 utilizes two high resolution encoders, one on each axis. The two encoders enable the mount to perform dual axes tracking. With advanced sky modeling the CEM120EC2 will be able to account and adjust for polar alignment error as well as changes in atmospheric (refractive) distortion. Fixed home sensors on each axis, allow the mount to save alignment models after power off too to be used on future nights.
Optional heavy duty and are available for order.
Optional Tri-Pier adapter for light weight payload ( ) is also available. It can be modified for permanent pier mounting.Manual and Instruction:
Firmware:
iOptron Telescope ASCOM Driver:
Specifications
| Mount | Center-balanced Equatorial Mount (CEM) |
| Payload | 52kg (115 lbs), exclude counterweight* |
| Mount weight | 26kg (57 lbs) |
| Payload/Mount weight ratio | 2 |
| Material | All metal |
| Latitude adjustment range | 0°~ 68° (0.5 arcmin division)** |
| Azimuth adjustment range | ± 5° (3 arcmin division) |
| PE (by encoder) | < 0.15 arcsec RMS*** |
| Worm period | 240 sec |
| PEC | Real time PEC (RPEC) |
| Right Ascension worm wheel | ?216mm, 360 teeth, zero backlash |
| Declination worm wheel | ?216mm, 360 teeth, zero backlash |
| Worm | ?26mm |
| Right Ascension axle | ?80mm, steel |
| Declination axle | ?80mm, steel |
| Right Ascension bearings | ?125mm |
| Declination bearings | ?125mm |
| Counterweight shaft | ?38.1x 540 mm (SS, anti-slip, 4.5kg) |
| Counterweight | 10 kg (22 lbs) |
| Mount base size | 210 x 230 mm |
| Motor drive | Precision stepper motor w/128 micro-step |
| Encoder Resolution | 0.035 arc seconds |
| Motor Resolution | 0.07 arc seconds |
| Slew speed | 4°/sec (960x) max. |
| Hand Controller | Go2Nova® 8407 V2, 8 line 21 character LCD |
| Power requirement | DC 12V, 5A |
| Power consumption | 0.7A(Tracking),1.8A(GOTO) |
| Polar Scope | Optional electronic polar scope |
| Meridian treatment | Stop (0-14° pass), auto flip |
| Zero position | Automatic zero search |
| Park position | Horizontal, vertical, current, alt/azi input |
| Level indicator | YES |
| Dovetail saddle | Losmandy D, 17.2" (437mm) |
| GPS | YES |
| Guiding port | ST-4 |
| Communication port | RS232, USB, LAN, WiFi |
| Cable management | 2xDC12V (1A), DC5V(1A), 2xDC (5A), ST4, 6P6C, 4xUSB2.0, USB3.0 (powered), USB for PS, AUX |
| Operation temperature | -10°C ~ 40°C |
| Pier/Tripod | Optional pier |
| Warranty | Two year limited |
** If you latitude is <10°,please contact iOptron for low latitude CW (#7326LL).
*** Measured with encoder on the bench, 240 seconds.
