iOptron CEM120 EC Equatorial Mount with RA Encoder – Ref. 7301

iOptron CEM120 EC Equatorial Mount with RA Encoder – Ref. 7301

Description :

The All NEW iOptron CEM120EC! 

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

The iOptron CEM120 EC is a professional-grade equatorial mount engineered for fixed installations and observatory use. A high-resolution optical encoder on the right ascension axis ensures sub-arcsecond tracking accuracy without the need for guiding, with a typical periodic error of less than ±0.15 arcseconds RMS.

With a payload capacity of 52 kg, the CEM120 EC can support large OTAs, filter wheels, rotators, and heavy astrophotography setups. The patented center-balanced design reduces strain on the motors and provides excellent mechanical stability.

It offers full connectivity (Ethernet, Wi-Fi, USB, RS-232) and seamless compatibility with major astronomy software such as ASCOM, INDI, NINA, MaximDL, and SkyX — making it ideal for remote or automated observatories.

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
• 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

User Benefits

• Sub-arcsecond tracking without guiding

• Supports heavy imaging systems up to 52 kg

• Stable, torque-efficient center-balanced architecture

• Ready for full remote observatory integration

• Reliable for long exposures and automation

The CEM120 EC is a serious equatorial mount for serious astrophotographers. With a high-res encoder directly on the RA axis, it delivers consistent, precise tracking for long sessions — without guiding.

Its structure, load capacity, and smart electronics make it ideal for observatories, permanent installations, and demanding users who need both power and precision.

PACKAGE CONTENTS

• CEM120EC mount head x1
• Go2Nova 8407 V2 hand controller x1
• 10 kg counterweight x1 ((free extra one for limited time)
• Counterweight shaft x1
• Hand controller cable x1
• Serial cable (#8412) x1

Tripod optional