Manufacturers & Suppliers of Astronomical Telescopes in India Serving Amateur Astronomers Since 1976

Goto Mounts / Tripods
i-OPTRON CEM 120 with iPolar GoTo Mount
Product Code: 7300 | 0°~ 68°Latitude Range
₹ 462000 + 18% GST Arriving Soon Pre Book Now Pay ₹ 50000 to Pre Book

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.

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
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 iPolar, 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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