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iOptron CEM120 - 7300

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$6,564 CAD

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An extraordinary innovation in mount design...Now with a new payload!

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 CEM120. 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.

The CEM120's performance is demonstrated by its low periodic tracking error of ±3.5 arc seconds. 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. It also adds some new features to the CEM family like Wi-Fi and LAN for remote operation and easy to use, reliable clutches on both axes.

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.Manuals and Instructions:
Quick Start Guide
Instruction Manual
AUX port plug (DIN-422) assembly

Download the latest firmware

iOptron Telescope ASCOM Driver:
Install ASCOM Driver and Commander

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) < ±3.5 arcsec***
Worm period 240 sec
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
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)
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
* OTA size and length dependent.
** If you latitude is <10°,please contact iOptron for low latitude CW (#7326LL).
*** Measured with encoder on the bench, 240 seconds

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