iOptron CEM26 "Center Balanced" go-to German equatorial mount with iPolar and 1.5" tripod

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iOptron's compact CEM26 mount is the next-generation center-balanced mount built on the success of the ground breaking CEM series. You're welcome.
Our Product #: C261A1
iOptron Product #: C261A1
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Product Description

The iOptron CEM26 center-balanced go-to equatorial mount with 1.5" tripod legs is whisper quiet, light in weight, and uses up to 60% less power than other mounts in its category. 

The iOptron "Z" design mount puts the weight of the payload over the mount's center of gravity, allowing for greater natural stability. Given its payload capacity, this means the "Z" designed mount is unusually light, a nice benefit when transporting and setting up at a remote observing site. Another mount feature is an adjustable counterweight bar to allow low latitude use without the counterweight hitting the tripod. And polar aligning is quick and accessible all the time since the polar scope is not blocked by the declination shaft.

The iOptron CEM26 is equipped with the latest advanced GO2NOVA go-to technology, making it one of the most powerful and accurate go-to mounts available. Its go-to database includes 212,000 objects. The hand control is intuitive to use and its large 4-line LCD screen simplifies the process of aligning your scope on the night sky and locating objects.

The iOptron CEM26 features a new design center-balanced equatorial mount for a maximum payload of 26 lbs (11.8 kg) with mount-only weight of only 10 lbs (4.5 kg). It is a specialized astrophotography mount ideal for entry-level and intermediate astro-photographers. It has a spring loaded gear system with customer-adjustable loading force. Gear switches on both R.A. and DEC axes allow easy balancing when disengaged. A pivoting counterweight shaft allows for 0º latitude operation. There is a spring loaded Vixen-style saddle for mounting optical tubes with a V-style dovetail mounting bar.

The included iOptron iPolar electronic polar finder makes polar alignment a breeze. 

The iOptron mount's stepper motor has low power consumption for extended use in the field. The drive has low periodic error (< ± 10 arc seconds). An integrated ST-4 autoguiding port allows easy connection to the autoguider of your choice There is also a serial port for firmware upgrade and computer control.

The standard heavy-duty tripod weighs 11 lbs (5kg). It has 1.5" diameter stainless steel tripod legs, with a die-cast metal tripod spreader and accessory tray.

Mount Center-Balanced Equatorial Mount
Max payload* 12 kg (26 lbs), exclude CW
Mount weight 4.5 kg (10 lbs)
Payload/Mount weight 2.6
Structure Material All metal, Casting + CNC machined
Exterior Finish Powdwer coating 
Latitude adjustment range 0° ~ 60°
Azimuth adjustment range ± 6º
Tracking accuracy (PE)** CEM26 <±10arcsec / CEM26EC <0.3 arcsec  RMS 
Period 600 sec
Worm diameter Φ15.2 mm, Brass
Right Ascension worm wheel Φ88 mm, 144 teeth, zero backlash 
Declination worm wheel Φ88 mm, 144 teeth, zero backlash 
Right Ascension axis shaft Φ35mm steel
Declination axis shaft Φ35mm steel
Right Ascension bearings Φ55mm ball bearing
Declination bearings Φ55mm ball bearing
Counterweight shaft Φ20X305 mm (M16), Stainless Steel 
Shaft extension none
Counterweight 4.5kg (10 lbs) X1
Motor Precision stepper motor, 1.8º/128X micro-step
Motor resolution 0.17 arcsec 
Transmission Synchronous belt
Hand Controller Go2Nova® 8409, 4 line 21 character LCD
Star Database 212,000+, star identification
Power DC 12V, 5A
AC adapter 100V ~ 240V (included)
Power consumption 0.5A(Tracking), 0.8A(GOTO)
Polar scope AccuAlign TM polar scope/Internal iPolar TM 
Meridian treatment Stop (0-10° pass), flip
Dovetail saddle 3.8" Vixen, center adjustable
Max slew speed 6°/sec (1440x)
Guiding port ST-4
Communication port USB, WiFi
WiFi Built in WiFi
Tripod 1.5" Stainless Steel, optional LiteRoc
Hard case CEM26 optional, CEM26EC included
GPS optional/external
Autoguiding Optional external iGuider
Operation temperature -10ºC ~ 40ºC
Warranty Two year limited

Tech Details

Warranty 2 years


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