iOptron - CEM40 with 2" Tripod and Hard Case

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Product Description

iOptron CEM40 with 2" Tripod and Hard Case

The iOptron® CEM40 mount is the next generation of center-balanced equatorial mounts. This mount is incredibly eye-pleasing, and its beauty is found in more than its appearance. The functionality of the mount is superb. Weighing in at only 15.8lbs., this mount can support a payload of up to 40lbs.! That's incredible!

This mount also has an integrated electronic polar finder scope known as the iPolar. This tool ensures the accurate alignment of a telescope, even when the pole star is obscured. There are large levers on the quick-lock drive engagement system; these large levers make it easy to snap the gears into place.

Innovative iOptron Technology

Make way for an innovative mount! This iOptron CEM40 mount uses iOptron's patent-pending Universal Self-Centering Saddle (USCS). This saddle accommodates Losmandy and Vixen-style dovetail plates. The CEM40 also uses iOptron's ultra-quiet, low-power consumption stepper motor drive system, aiding the mount in providing precise tracking.

Computerized Mount Features

The iOptron CEM40 mount uses the Go2Nova® 8407 hand controller to navigate the night sky. This incredible technology helps observers find celestial objects with the aid of the mount's 212,000+ object database! For those looking for a telescope that has the capability of tracking and finding beautiful night sky objects, this mount is a must have tool.

With the included tripod, 10lbs. counterweight, and the mount's computerized technology, observers are just an OTA away from a spectacular viewing experience!


  • Unique design, Center-Balanced equatorial mount (CEM) for maximum payload and minimum mount weight
  • Idea for both visual observation and astrophotography
  • Maximum payload of 40 lbs (18 kg) with the mount weight of only 15.8 lbs (7.2 kg)
  • All metal, CNC machined with red/black anodized
  • Easy to use quick-lock gear clutches
  • Integrated iPolarTM electronic polar finder
  • Low periodic error (< ± 7 arc seconds)
  • Permanent periodic error correction (PPEC)
  • Precision stepper motor for precise GOTO and accurate tracking
  • Go2Nova® 8407+ controller with Advanced GOTONOVA® GOTO Technology with built-in heater
  • Integrated ST-4 autoguiding port
  • 32-channel Global Positioning System (GPS)
  • USB communication port
  • Cable management system
  • New, patent-pending iOptron universal saddle
  • Standard 2 inch heavy-duty stainless steel tripod (8kg)
  • Hard case
  • Optional WiFi for mount control via SmartPhone/Tablet/Computer


Name iOptron - CEM40 with 2" Tripod and Hard Case
Manufacturer iOptron
Model IOP-7402A-HC
Azimuth Adjustment ± 6º
Communication Ports USB
Counterweights 10lbs (4.5kg)X1
Counterweight Shaft Φ20X410 mm, Stainless Steel (1 kg)
Database 212,000+, star identification
Declination Worm Wheel Φ110mm, 216 teeth, zero backlash
Declination Axis Φ45mm steel
Latitude Adjustment 0º ~ 60º(special CW shaft mounting if <10° )
Material All metal, CNC machined
Meridian Treatment Stop (0-10° pass), flip
Motor Resolution 0.08 arcsec (200 PPS)
Motors Precision stepper motor, 1.8º/128X micro-step
Mount Center-Balanced Equatorial Mount
Operating Temperature -10ºC ~ 40ºC
Periodic Error Correction PPEC
Polar Axis Scope Internal iPolar electronic polar scope
Power Consumption 0.6A(Tracking), 0.9A(GOTO)
Power Requirements DC 12V, 5A
Right Ascension Axis Φ45mm steel
Right Ascension Worm Wheel Φ110mm, 216 teeth, zero backlash
Tracking accuracy <±7 arcsec
Transmission Synchronous belt
Tripod 2" Stainless Steel(8kg), optional tri-pier
Warranty Two year limited


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