Revolutionizing the way you mount your equipment... Now featuring an enhanced payload capacity!

Understanding the ever-increasing need for a sturdy and precise equatorial mount that can handle larger scopes and sophisticated imaging setups, we bring you the iOptron CEM120. This mount takes advantage of our game-changing "center balance" design, which concentrates the mount and the payload weight directly over the pier or tripod for superior stability. This design innovation allows the CEM120 to support an impressive payload of up to 115 lbs (52 kg).

When it comes to performance, the CEM120 shines with a low periodic tracking error of just ±3.5 arc seconds. But that's not all. This mount also features a state-of-the-art cable management system with a multitude of ports placed strategically to avoid cable mess and reduce the risk of cable damage. Plus, it brings new tech to the CEM lineup, including Wi-Fi and LAN capabilities for remote operation, and user-friendly, dependable clutches on both axes.

Want to go heavier on equipment? Optional heavy-duty Tri-Pier 360 and Permanent Pier are up for grabs.

Looking for a lighter setup? We've got an optional Tri-Pier adapter (8036-120) that can also be adapted for permanent pier installations.

Features

Redesigned center-balanced equatorial mount (CEM) for increased payload and natural stability
Ideal for both visual and astrophotography applications
Supports a hefty payload of 115 lbs (52 kg), while the mount itself weighs 57 lbs (26 kg)
Intuitive and reliable gear clutches for smooth operation
Fine-tuned altitude and azimuth adjustments
High-precision stepper motor boasting 0.07 arcsec accuracy for exact GOTO and spot-on tracking
Special polar alignment routine for users without a view of the Pole Star
Comes with the Go2Nova® 8410 controller featuring Advanced GOTONOVA® GOTO Technology and an integrated heater
Low periodic error (PE) of less than ±3.5 arcsec and Permanent Periodic Error Correction (PPEC)
32-channel Global Positioning System (GPS) onboard
In-built WiFi and LAN for remote functionality
ST-4 autoguiding port included
Advanced cable management features for added convenience
Spring-loaded, individually adjustable Losmandy saddle for easy adjustments

What's in the Box?

Box 1 of 2: #7320

CEM120 Mount Head x1
Go2Nova 8407 V2 Hand Controller x1
Hand Controller Cable x1
Counterweight Shaft x1
Accessory Pack x1

Box 2 of 2: #7325

10 kg Counterweight x2

Specifications

Mount	Center-balanced Equatorial Mount (CEM)
Payload¹	52kg (115 lbs), exclude counterweight
Mount weight	26kg (57 lbs)
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 (22 lbs)
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

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 CEM120

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