iOptron CEM120 mount (several versions)

Frame iOptron CEM120 (Standard)

The center-balanced equatorial mount iOptron CEM120 he standard version is designed for astronomers and astrophotographers wishing to combine high payload capacity with mechanical robustness. With a payload of up to 54.4 kg (120 lb), it can support large, heavily-equipped catadioptric or dobson telescopes. Its Center-Balanced Equatorial Mount design reduces vibration while ensuring smooth, precise tracking for visual observation and short-to-medium exposures.

• Load capacity: 54.4 kg (120 lb)
• Frame weight: approx. 23 kg
• Load/weight ratio: ~2.4
• Hardened steel axles with sealed ball bearings
• Manual azimuth and latitude controls
• Vixen/Losmandy double saddle for universal compatibility
• Adjustable tubular steel feet

Ideal for heavy visual observation configurations, the standard version of the CEM120 offers a stable base with no on-board electronics, allowing the user to integrate the tracking or encoder system of his choice. Its all-metal design guarantees long life and optimum rigidity when installing large optical tubes.

Frame iOptron CEM120 EC

Visit CEM120 EC incorporates a high-resolution encoder on the right ascension axis to provide real-time periodic error correction (RPEC). Combined with the Go2Nova® 8408 controller, this version enables more precise tracking over long exposures, without the need for external autoguiding, for sessions lasting up to a few minutes.

• High-resolution encoder on AD axis for unidirectional PEC correction
• Go2Nova 8408 controller with 40,000+ object database
• Integrated tracking for up to 5 minutes without autoguiding
• Optional iPolar polar alignment
• Cable management system and ergonomic locking levers

The EC version retains the mechanical features of the standard CEM120 while adding high-performance on-board electronics, ideal for moderate to advanced astrophotography without immediately investing in an autoguider. Real-time PEC correction significantly improves tracking accuracy and reduces image artifacts.

Frame iOptron CEM120 EC2

Visit CEM120 EC2 goes one step further by integrating two high-resolution encoders (AD and DEC axes) for real-time bidirectional correction, offering maximum stability and precision for long exposure astrophotography and deep imaging. Combined with the Go2Nova 8408+ controller, it meets the requirements of the most demanding imaging projects.

• Dual high-resolution encoders on AD & DEC axes
• Bidirectional periodic corrector (PEC) < 0.3″ RMS on both axes
• Reliable tracking in long exposures (10+ minutes) with or without autoguiding
• Go2Nova 8408+ controller with USB port and integrated Wi-Fi
• Integrated iPolar polar alignment for ultra-fast stationing

Designed for deep imaging, the CEM120 EC2 offers exceptional resistance to imbalance and vibration thanks to its dual-axis sensors, guaranteeing uncompromising image quality. It reduces the need for external corrections and simplifies the workflow of professional astrophotographers.

Version comparison table CEM120