An Extraordinary Innovation in Equatorial Mount Design, Now with an Unparalleled Payload Capacity!

The iOptron CEM120EC2 Mount with High Precision Encoders, is a mount that offers the remarkable benefits of our revolutionary "centre balance" design while boasting an extraordinary payload capacity of up to 52 kg.

The foundation of the CEM120EC2's exceptional performance lies in its innovative "centre balance" design. By strategically positioning the mount and payload weight directly over the center of the pier or tripod, this groundbreaking approach achieves a natural stability that is unmatched in the industry. The result is a seamless and smooth mechanical operation, ensuring your imaging sessions are free from frustrating vibrations and disturbances that can compromise image quality.

In addition to its unrivaled stability, the CEM120EC2 boasts exceptional accuracy, thanks to its integration of two high-resolution encoders – one on each axis. This dual-encoder system enables the mount to perform dual-axis tracking, accounting for and adjusting to polar alignment errors and changes in atmospheric (refractive) distortion through advanced sky modeling. Furthermore, fixed home sensors on each axis allow the mount to save alignment models even after power-off, ensuring a seamless and efficient setup for future observing sessions.

The CEM120EC2's performance is further demonstrated by its exceptionally low periodic tracking error of ±3.5 arc seconds. This level of precision is a testament to iOptron's commitment to delivering the highest quality and most reliable astronomical equipment on the market.

In addition to its exceptional stability and accuracy, the CEM120EC2 features an advanced cable management system that sets it apart from its competitors. With an increased number of ports strategically located throughout the mount, tangled and fractured cables become a thing of the past. This thoughtful design not only enhances the overall user experience but also contributes to the longevity and durability of your equipment.

Moreover, the CEM120EC2 introduces new features to the renowned CEM family, such as Wi-Fi and LAN connectivity for convenient remote operation, and easy-to-use, reliable clutches on both axes, ensuring seamless and intuitive operation.

Heavy Duty Tri Pier 360

To further enhance your observing experience, iOptron offers optional heavy-duty Tri-Pier 360 and Permanent Piers, designed specifically for the CEM120EC2. These sturdy and robust accessories provide the ultimate in stability and support, allowing you to fully capitalize on the CEM120EC2's impressive payload capacity. Additionally, for those with lighter payloads, the optional Tri-Pier adapter (8036-120) offers a lightweight yet versatile solution, with the potential for permanent pier mounting.

Stability and Payload capacity

With its cutting-edge features, uncompromising stability, remarkable payload capacity, and exceptional precision, the iOptron CEM120EC2 is poised to redefine the boundaries of astrophotography and visual observing. Whether you're an avid astrophotographer seeking to capture the most stunning celestial vistas or a dedicated visual observer exploring the depths of the cosmos, the CEM120EC2 promises an exceptional experience that will elevate your passion for astronomy to new heights.

 

Features:

• A new design, a centre-balanced equatorial mount (CEM) for maximum payload with natural stability

• Observatory astrophotography mount is ideal for both visual and Astro-photographers

• Payload of 52 kg with the mount weight of 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 Octans

• Go2Nova® 8407 V2 controller with Advanced GOTONOVA® GOTO Technology with built-in heater

• High precision tracking with low periodic error (PE)<±3.5 arcsec

• Permanent periodic error correction (PPEC)

• 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.

 

Specifications:

Mount	Center-balanced Equatorial Mount (CEM)
Payload1	52kg, exclude counterweight
Mount weight	26kg
Payload/Mount weight ratio	2
Material	All metal
Latitude adjustment range2	0°~ 68° (0.5 arcmin division)
Azimuth adjustment range	± 5° (3 arcmin division)
PE (by encoder)3	< ±3.5 arcsec
Worm period	240 sec
PEC	PPEC
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
Mount base size	210 x 230 mm
Motor drive	Precision stepper motor w/128 micro-step
Resolution	0.07 arc seconds
Slew speed	4°/sec (960x) max.
Hand Controller	Go2Nova® 8410, 8 line 21 character LCD
Power requirement4	DC 12V, 5A
Power consumption	0.7A(Tracking),1.8A(GOTO)
Polar Scope	Optional iPolar 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), 2xDC (5A), ST4, 6P6C, 2xUSB2.0, 3xUSB3.0, USB for PS, AUX
Operation temperature	-10°C ~ +40°C
Pier/Tripod	Optional pier
Warranty	Two year limited

 

Recommended Accessories

	iOptron 10kg Counterweight for CEM120 An additional 10kg to your iOptron CEM120 mount for heavier payload requirements.
	iOptron Low Latitude 10kg Counterweight for CEM120 Add an extra 10kg to your iOptron CEM120 mount for heavier payload requirements when set at low latitudes (<10°).
	iOptron Pier Adapter for CEM120 Connect your iOptron CEM120 Mount to the iOptron Tri-Pier system with the iOptron Pier Adapter for Optron CEM120. Suitable with Tri-Pier or Tri-Pier 360.

	iOptron 10kg Counterweight for CEM120 An additional 10kg to your iOptron CEM120 mount for heavier payload requirements.
	iOptron Low Latitude 10kg Counterweight for CEM120 Add an extra 10kg to your iOptron CEM120 mount for heavier payload requirements when set at low latitudes (<10°).
	iOptron Pier Adapter for CEM120 Connect your iOptron CEM120 Mount to the iOptron Tri-Pier system with the iOptron Pier Adapter for Optron CEM120. Suitable with Tri-Pier or Tri-Pier 360.

1.1. OTA size and length dependent.
2. If you latitude is <10°,please contact iOptron for low latitude CW (#7326LL).
3. Measured with encoder on the bench, 240 seconds
4. Included AC adapter is for indoor use only 

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iOptron

iOptron® is a leading manufacturer of innovative astronomical telescopes, mounts, and optical instruments. The company offers a wide range of products for celestial observation and astrophotography, from beginner-friendly telescopes to advanced apochromatic refractors and large aperture Newtonian reflectors with precision tracking mounts. With state-of-the-art R&D facilities and a commitment to cutting-edge optical designs, iOptron® delivers high-quality, high-performance products. The company has diversified into various optical applications beyond astronomy and cultivated a loyal global customer base through its excellence in optics, customer support, and pushing boundaries in the field.

Product Code: IOP-7302