iOptron CEM60EC Equatorial Mount Head

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iOptron CEM60EC Equatorial Mount Head


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iOptron are proud to introduce the CEM60EC with high precision encoder and sub-arcsecond PE! — with an increased payload of 60 lbs! The CEM60EC 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 CEM60EC 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 CEM60EC – 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 60 lbs (27.2 kg) with the mount-only weight of 27 lbs (12.3 kg)
  • Gear switches on both R.A. and DEC axes for easy balancing when disengaged
  • Adjustable counterweight shaft for 0º 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 AccuAligningTM 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
  • Realtime periodic error correction (RPEC)
  • 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), Tri-Pier with Rolling Case (#8034-RC), 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 PowerWeightTM rechargeable battery pack


Mount Center-balanced Equatorial Mount (CEM)
Payload 60 lb (27.2kg), exclude counterweight*
Mount weight 27 lb (12.3kg)
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 Φ146mm, 288 tooth aluminum
Declination worm wheel Φ146mm, 288 tooth aluminum
PEC Real Time PEC
PE < 0.5 arcsec rms for 5 min (< 0.3 arcsec for 2nd GEN)
Counterweight shaft Φ28x 450 mm Stainless Steel
Counterweight 21 lb (9.5 kg)
Mount base size Φ150 mm
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
TM 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

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