iOptron CEM60 Equatorial Mount

iOptron CEM60 Equatorial Mount


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

This past year we introduced a new design concept -- the center-balanced equatorial mount (or CEM) called the ZEQ25. Now, we're proud to introduce the CEM60! -- with an increased payload of 60 lbs! The CEM60 puts the weight of the payload at the center of gravity allowing for greater natural stability. This makes the mount extremely light compared to its payload--a nice benefit when setting up at a remote site. And polar aligning is quick and accessible all the time since the polar scope is not blocked by the declination shaft.

The CEM60 is equipped with the most advanced GOTONOVA® GOTO technology, making it one of the most powerful and accurate GOTO mounts available. Its database includes over 300,000 objects. The other features include an adjustable counterweight bar, magnetically loaded gear system, gear switches on both R.A. and DEC axes, screw/worm type latitude adjuster and built-in or customized cable management system. The CEM60 - a new category (and payload capacity) of mounts for viewing and astrophotography.

(Tripod/Pier not included.)


  • A new design, center-balanced equatorial mount (CEM) for maximum payload and minimum mount weight
  • Specialized astrophotography mount ideal for both visual and Astro-photographers
  • Patent pending non-contact magnetically loaded gear system
  • Payload of 27.2kg (60 lbs) with the mount-only weight of 12.3kg (27 lbs)
  • Gear switches on both R.A. and DEC axes for easy balancing when disengaged
  • Adjustable counterweight shaft for 0° latitude operation
  • Screw/worm type latitude adjuster for precision adjustments
  • Milling machine tooling vise type latitude bearing and locks system for rock solid positioning
  • User side azimuth fine adjusters for easy azimuth adjustment
  • Precision stepper motor with 0.06 arcsec accuracy for precise GOTO and accurate tracking
  • iOptron AccuAligning™ calibrated polar scope with dark-field illumination and easy polar alignment procedure, allowing for fast and accurate polar alignment
  • Polar alignment routine for those who can't see the Pole Star
  • Go2Nova® 8407+ controller with Advanced GOTONOVA® GOTO Technology with built in heater
  • Permanent periodic error correction (PPEC)
  • Integrated ST-4 autoguiding port
  • Built-in 32-channel Global Positioning System (GPS)
  • Built-in or customized cable management system
  • Spring loaded Vixen/Losmandy dual saddle
  • 150mm base size to match optional 2 inch heavy-duty stainless steel tripod (8kg)
  • Included aluminum hard carrying case
  • Optional Tri-Pier (#8034), 42 inch pier (#8033) or 48 inch pier (#8030)
  • Optional 2-inch tripod available (#8021ACC)
  • Optional Mini Pier (#8032) for extending height also available
  • Optional PowerWeight™ rechargeable battery pack


  • Mount: Center-balanced Equatorial Mount (CEM)
  • Payload: 27.2kg (60 lb), exclude counterweight*
  • Mount weight: 12.3kg (27 lb)
  • Payload:Mount weight ratio: 2.22:1
  • Material: All metal (except GPS cover)
  • Latitude adjustment range: 0°~ 70°
  • Azimuth adjustment range: ± 8°
  • Right Ascension worm wheel: 146mm diameter, 288 tooth aluminum
  • Declination worm wheel: 146mm diameter, 288 tooth aluminum
  • PE (by encoder): < ±5 arcsec p-p
  • Counterweight shaft: 28mm diameter X 450mm Stainless Steel
  • Counterweight: 9.5kg (21 lb) X1
  • Mount base size: 150mm diameter
  • Motor drive: Stepper motor
  • Resolution: 0.06 arc seconds
  • Slew speed: 1×,2×,8×,16×,64×,128×,256×,512×,MAX(~3.75°/sec)
  • Power consumption: 0.6A (Tracking), 1.1A (GOTO)
  • Power requirement: 12V DC 2A
  • AC adapter: 100V ~ 240V (included)
  • Polar Scope: AccuAlign™ dark field illuminated, 2 arc min
  • Level indicator: Level bubble
  • Dovetail saddle: 8” Losmandy/Vixen dual saddle
  • Hand Controller: Go2Nova® 8407+ 359,000 objects database, star recognition
  • Meridian treatment: Stop (0-15° pass), auto flip
  • GPS: Internal 32-channel GPS
  • Autoguide port: ST-4
  • Communication port: Serial port
  • PC computer control: Yes (ASCOM)
  • Cable management: 4X USB, 2X DC12V (MAX 5A), 6P6C
  • Operation temperature: -20°C ~ +45°C
  • Tripod: Optional 2" tripod Stainless Steel (8kg) /Pier (10kg)
  • Warranty: Two year limited

* These are only guidelines. Some telescopes are very long or very big for their weight and may require a larger mount. Remember also that imaging requirements are more rigid than visual observation.