About this product
Model: iop_cem120-ec2_7302
Part Number: 7302
An extraordinary innovation in mount design with increased payload and high precision optical encoder on both axis!
Recognising 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 utilises two high resolution encoders, one on each axis. The two encoders enable the mount to perform dual axes tracking. With advanced sky modelling 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 Tri-Pier 360 and Permanent Pier are available for order.
Optional Tri-Pier adapter for light weight payload ( 8036-120) is also available It can be modified for permanent pier mounting.
Note: The optional heavy duty Tri-Pier 360 shown in photos is not included but can be purchased separately. A Tri-Pier adapter for light weight payloads ( 8036-120) is also available and can be modified for permanent pier mounting.
FEATURES
- A new design, center-balanced equatorial mount (CEM) for maximum payload with natural stability
- Observatory astrophotography mount ideal for both visual and Astro-photographers
- Payload of 115 lbs (52 kg) with the mount weight of 57 lbs (26 kg)
- Easy to use and reliable gear clutches
- Precision altitude and azimuth adjustment.
- Precision stepper motor with 0.07 arcsec accuracy for precise GOTO and accurate tracking
- Polar alignment routine for those who can't see the Pole Star
- Go2Nova® 8407 V2 controller with Advanced GOTONOVA® GOTO Technology with built in heater
- Dual high precision encoders on both RA and DEC
- High precision tracking with low periodic error (PE)<0.15 arcsec RMS
- Real time periodic error correction (RPEC)
- 32-channel Global Positioning System (GPS)
- Built-in WiFi and LAN for remote operation
- Integrated ST-4 autoguiding port
- Advanced cable management system with more choices
- Spring loaded, individual adjustable Losmandy saddle
Go2Nova Hand Controller 8407
- 300,000+ object database
- 8 line, 21 character back lit large screen LCD
- Low temperature operation as low as -20ºC
- User friendly interface
- 9 speed slew control with quiet mode
- Large object database
- Serial port for firmware upgrade
Base Plate Drawing
What's in the box
- Telescope mount
- Hand controller (HC) – Go2Nova® #8407
- 2x Counterweight (10 kg/22 lbs)
- Stainless steel counterweight shaft (4.6kg)
- HC controller cable
- RS232‐RJ9 serial cable
- 12V5A AC adapter – 100‐240V
- 4X Base mounting screws
- GPS external antenna
- Wi‐Fi external antenna
- Quick Start Guide
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 | Φ216mm, 360 teeth, zero backlash |
| Declination worm wheel | Φ216mm, 360 teeth, zero backlash |
| Worm | Φ26mm |
| Right Ascension axle | Φ80mm, steel |
| Declination axle | Φ80mm, steel |
| Right Ascension bearings | Φ125mm |
| Declination bearings | Φ125mm |
| Counterweight shaft | Φ38.1x 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 |
| Pier/Tripod | Optional pier |
| Warranty | Two year limited |
* These are only guidelines. Some telescopes are very long or very big for their weight and may require a larger mount. Remember also that imaging requirements are more rigid than visual observation.
Downloads / Manuals
Manual:
Quick Start Guide
Instruction Manual
Electronic Polar Scope (PoleMaster) Installation Instructions
AUX port plug (DIN-422) assembly
Firmware:
Download Latest Firmware
iOptron Telescope ASCOM Driver:
Install ASCOM Driver and Commander
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