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iOptron CEM40 with iPolar, 1.75-Inch LiteRoc Tripod, and Hard Case

SKU : IO-7403A-HC

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  • Mount weight: 15.8 lbs
  • Maximum payload: 40 lbs
  • Integrated iPolar polar scope
  • Tracking accuracy: 7 arcsec

Product Details

  • Please note: This iOptron CEM40 includes and integrated iPolar (polar alignment scope), a 1.75-inch LiteRoc tripod, and a custom hard case to fit both.

    The iOptron CEM40 computerized mount is an impressive and notable addition to the center-balanced equatorial mounts on the astronomy market today. Coupled with a sleek design and a payload capacity more than doubling its own weight, this full metal mount isn't something to pass up. Whether you're an avid astrophotographer or a dedicated visual observer, this mount will perfectly suit your needs.

    Already integrated into this mount on arrival is the electronic polar finder scope, the iPolar. With this, you're sure to have accurate and easy polar alignment whenever you're ready to get out under the stars--even if the pole star is obscured! This is just one of many incredible features of the iOptron CEM40 Mount.

    iOptron CEM40 Main Features:

    • Heavy Load Capacity - Weighing only 15.6 lbs itself, this mount can easily support up to 40 lbs with no issues
    • Integrated iPolar Polar Finder - Integrated polar scope allows for easy polar alignment with no external equipment required to purchase
    • Low Periodic Error - Coming in with fantastic 7-arcsecond accuracy and built-in permanent periodic error correction, your tracking will be essentially perfect in no time
    • Go2Nova 8407+ Controller - Intuitive system controller with Advanced GOTONOVA GOTO Technology to ensure comprehensive control
    • Multi-Port Compatibility with GPS - Utilize the 32-channel GPS integrated into the mount with various ports for ST-4 autoguiding and other accessories
    • Tripod and Hard Case - Enjoy a 1.75-inch LiteRoc tripod and Hard Case included with this system to ensure your setup is both sturdy and protected
    • WiFi Capabilities - This whole system can be controlled via a smartphone, tablet, or computer 

    Innovative iOptron Technology

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

    iOptron CEM40 Mount Close Lens

    The iOptron CEM40 mount uses the Go2Nova 8407 hand controller to navigate the night sky. This 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 night sky objects, this mount is a must-have tool.

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

    iOptron SKU: C402A3

    What's in the Box

    • iOptron CEM40 with integrated iPolar
    • Counterweight Shaft
    • 10 lb Counterweight
    • Hard Carrying Case
    • 1.75-inch LiteRoc Tripod
    • Go2Nova 8407 Hand Controller


  • specifications

    Counterweight10 lb
    Free ShippingYes
    Head DesignEquatorial
    Instrument Capacity40 lb (18 kg)
    Mount Head Weight15.8 lb (7.2 kg)
    Telescope ConnectionDual Vixen & Losmandy
    Tracking AccuracyLess than 7 Arcseconds
    Tripod Weight15 lb
    Tripod2" Stainless Steel
    Warranty2 Year Limited Warranty
  • included items

  • CEM40: Center-balanced equatorial mount head
  • Adjustable Counterweight shaft and 10-pound counterweight
  • Case: Fitted hard case
  • Tripod: 1.75-inch LiteRoc with spreader-accessory tray

Product Reviews

Customer Reviews
4.7 Based on 3 Reviews
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Alan F.
United States United States


I own a EQ6 r Pro and because they are on an extended backorder I got this mount. Let’s just say it’s no EQ6!! I like it but will like it more when they update the firmware so I can plug it into the asi air pro … right now it has to go threw a hub of sorts … not happy about that.. One other thing.. it should come with two weights…being able to handle a 40 pound payload… needs more weight I have a total of 22.5 pound assembly on it and one 11 pound weight don’t cut it. Shipping took a little longer than should have but it was free that’s important when buying a heave mount. It came with one minor dent in one of the legs on the pier .. not a deal killer but disappointing.. thanks OPT

OPT Telescopes iOptron CEM40 with iPolar, 1.75-Inch LiteRoc Tripod, and Hard Case ReviewOPT Telescopes iOptron CEM40 with iPolar, 1.75-Inch LiteRoc Tripod, and Hard Case Review
Michael L.
United States United States

iOptron CEM40: Building a new Astrophotography Platform

iOptron CEM40 appears to be a well made and sturdy mount. So far everything works as advertised. Functions really well with the ZWO ASIAIR Pro and ZWO Cameras, which is all new hardware for me. Having a great time working step by step to assemble a new imaging platform with the iOptron CEM40 as the foundation. OPT has been great, good communication and fast shipping which really helps to keep things moving forward. Thanks!

OPT Telescopes iOptron CEM40 with iPolar, 1.75-Inch LiteRoc Tripod, and Hard Case Review
Paul A.
United States United States

First light on new mount, the ioptron cem40

I did a huge amount of research on mounts for doing astrophotography. My first mount was a Celestron CG-5 and it just was not a reliable platform for photography. I got the ioptron because it is so much lighter than any of the others that are capable of carrying 40 lbs of gear, and has a reputation of having excellent tracking and guiding ability. My first test shows that it deserves all its accolades. Guiding averaged 0.1 pixel rms, similar to even the most expensive observatory mounts. Controls are precise and so easy to use compared to the Celestron. Ipolar is super easy to use to get precise polar alignment. The 1.75” tripod especially when you attach the accessory tray is rock solid, and I can easily carry the whole thing out to my back yard for imaging. Great investment if you want to get serious about imaging and especially for portable locations.