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iOptron CEM120 EC2 mount

CHF 8'099.00incl. Swiss VAT

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Timeframe: 10 days to 3 weeks
Estimated shipping: Between November 19 and 24, 2026

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Product description

Product description

Mount 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.

Mount 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.

Mount 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

Criteria CEM120 Standard CEM120 EC CEM120 EC2
Encoders No 1 (AD axis) 2 (AD & DEC axes)
Periodic Correction (PEC) - One-way on AD Bidirectional on AD & DEC
Controller Manual / external Go2Nova 8408 Go2Nova 8408+
Polar alignment Visual (polar viewfinder) iPolar optional iPolar integrated
Tracking without autosteering No Up to 5 min. 10 min. +.
USB / Wi-Fi port No USB USB & Wi-Fi
Recommended use Visual observation & beginner photography Moderate astrophotography Deep & long exposure imaging
Price guide The most affordable Intermediate Premium
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Frequently asked questions

Frequently asked questions

Pour quel usage choisir l'iOptron CEM120 EC2 ?

Observatory or fixed-site mount for astrophotography with instruments weighing up to 52 kg: 14″ Schmidt-Cassegrain, 12″ Ritchey-Chrétien, large refractors. Recommended capacity for astrophotography: 39 kg, or 75 % of the advertised load, to maintain precise tracking.

Qu'est-ce qui distingue l'iOptron CEM120 EC2 des autres montures ?

Équatoriale à équilibrage central de grande capacité (52 kg pour 26 kg de tête), avec USB, réseau local et Wi-Fi. Version EC2 : encodeurs sur les deux axes.

Quelle alimentation prévoir pour l'iOptron CEM120 EC2 ?

L'iOptron CEM120 EC2 s'alimente en 12 V DC, 5 A, adaptateur secteur fourni. Consommation : 0,7 A en suivi, 1,8 A en GoTo. L'alimentation est fournie. L'adaptateur secteur livré est prévu pour un usage à l'intérieur ; sur le terrain, utilisez une batterie 12 V.

Quel trépied utiliser avec l'iOptron CEM120 EC2 ?

L'iOptron CEM120 EC2 est vendue sans trépied. Elle est prévue pour un pilier fixe ou une colonne d'observatoire dimensionnés pour la charge totale.

Comment piloter l'iOptron CEM120 EC2 ?

L'iOptron CEM120 EC2 se pilote avec une raquette, un smartphone ou une tablette en Wi-Fi ou un ordinateur en USB ou réseau Ethernet (ASCOM). Pour l'autoguidage (port ST4), une lunette guide comme la 52 Scope guide or the Sky-Watcher EVOGUIDE-50ED is appropriate.

Technical specifications

Technical specifications

Technical specifications

Frame type
German Equatorial
How It Works
Equatorial
Visual Payload
52 kg
Astrophotography Capabilities of the Mount
39 kg
GoTo
Yes
Encoders
On both axes
Connectivity
Wi-Fi, USB, ASCOM, Handheld, Ethernet
ST4 Autoguiding Mount
Yes
Periodic error
< 0,15″ RMS (encodeurs AD et DEC)
Dovetail
Losmandy
Counterweight
Required and included
Counterweight bar
Ø 38.1 × 540 mm
Power supply
12 V DC, 5 A, AC adapter included
Power supply included
Yes
Consumption
0.7 A in tracking mode, 1.8 A in GoTo mode
Tripod included
No
Frame weight
26 kg
Latitude range
0° to 68°
Azimuth Adjustment
±5°

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