equatorial mounts & wedges

iOptron CEM25EC Mount with 1.75" LiteRoc Tripod and Hard Case - 7103EC-HC

iOptron   ——   SKU: IOP-7103EC-HC
$2,699.00 CAD
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Product Info

iOptron CEM25EC Center Balanced Mount with Low Periodic Error and Including a 1.75" LiteRoc Tripod
and a Hard Case

The next step up from the CEM25 – Low Periodic Error CEM25EC! It has a Periodic Error less than 0.3 arcsecond RMS, by virtue of its high precision encoder system which is included.

  • A new design Center-Balanced equatorial mount for maximum payload and minimum mount weight
  • Specialized astrophotography mount ideal for entry-level and intermediate Astro-photographers
  • High Precision optical encoder and control technology
  • Low periodic error (< ± 0.3 arcsecond RMS)
  • Payload of 27 lb (12.3 kg) with the mount-only weight of 10.4 lb (4.7 kg)
  • Spring loaded gear system with customer adjustable loading force
  • Gear switches on both R.A. and DEC axes for easy balancing when disengaged
  • Adjustable counterweight shaft for 0º latitude operation
  • Stepper motor with low power consumption
  • New electronics and control adapter from CEM60
  • iOptron AccuAlign 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 8408 controller with Advanced GOTONOVA Technology
  • Integrated ST-4 autoguiding port
  • Built-in 32-channel Global Positioning System (GPS)
  • Serial port for firmware upgrade and computer control
  • A Hard Carrying Case is included
  • Spring loaded Vixen-style saddle
  • 1.75 inch LiteRoc tripod included
  • Die-cast metal tripod spreader with accessory tray
  • Optional: PowerWeight rechargeable battery pack
  • Optional: StarFi WiFi adaper for full function control via SmartPhone/Tablet/Computer

The CEM25EC has all of the features of the CEM25 and now it also has a guaranteed low periodic error of ~+/- 0.3 arcsecond RMS. The improved tracking accuracy is a product of tighter production tolerances and the inclusion of a high precision optical encoder, along with advanced control technology. It also features larger gear switches on both axes, making access and adjustment easier especially with light gloves on. The Center-balanced Equatorial Mount (CEM), is a whisper quiet mount, and light weight, uses up to 60% less GOTO power consumption than other mounts in category. The "Z" shape design puts the weight of the payload at the center of gravity allowing for greater natural stability. Given its payload capacity, this means the mount is unusually light, which you will appreciate when setting up at a remote site.

Other features include an adjustable counterweight bar to prevent obstruction with the tripod. And polar aligning is quick and accessible all the time since the polar scope is not blocked by the declination shaft. The CEM25EC is equipped with the latest advanced GOTONOVA GOTO technology, and the special high precision optical encoder, making it one of the most powerful and accurate GOTO mounts. Its database includes over 150,000+ objects. The Go2Nova Hand Controller is intuitive to use and its large 4-line LCD screen simplifies the process of setting telescopes and locating objects.


Mount Center-Balanced Equatorial Mount
Payload 27 lb (12.3 kg), excluding the counterweight
Mount weight 10.4 lb (4.7 kg)
Payload/Mount weight 2.60
Encoder High-Precision Optical Encoder
Periodic error (PE) * <±0.3 arcsec RMS
Right Ascension worm wheel Φ 88 mm, 144 teeth aluminum
Declination worm wheel Φ 88 mm, 144 teeth aluminum
Right Ascension axis shaft Φ 35 mm steel
Declination axis shaft Φ 35 mm steel
Right Ascension bearing Φ 55 mm ball bearing
Declination bearing Φ 55 mm ball bearing
Worm gears Φ 15.2 mm, Brass
Motor drive 1.8º stepper motor, 128X microdivision
Resolution 0.17 arcseconds
Transmission Synchronous belt
Latitude adjustment range 0º ~ 60º
Azimuth adjustment range ± 10º
GPS Internal 32-channel GPS
Polar Scope AccuAlign dark-field illuminated
Level indicator Level bubble
Hand Controller Go2Nova 8408 with 150,000+ objects database
Tracking Automatic
Slew speed 1×,2×,8×,16×,64×,128×,256×,512×,MAX (4º/sec)
Power consumption 0.35 A(Tracking), 0.6 A(GOTO)
Power requirements 12 V DC (9 ~ 15 Volts), 1.5 Amp
AC adapter 100 V ~ 240 V (included)
Power-down memory Yes
Serial port Yes (on hand controller)
Autoguide port Yes
Firmware upgrade Yes
PC computer control Yes (ASCOM)
Counterweight shaft Φ 20 mm, Stainless Steel
Counterweight 10.4 lb (4.7 kg)
Tripod 1.75" LiteRoc, (Sturdy, Lighter) Tripod
Dovetail saddle Spring loaded Vixen-style
Operation temperature -10º C ~ 40º C
Case Yes, Hard Carry Case Included
Warranty Two year limited

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