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iOptron HEM27 Hybrid Harmonic Drive Mount

US$ 1,969.01

Not in Stock: will Be Backordered

Short Description

Hybrid equatorial mount with harmonic drive in AR and crown with VSF in declination

***Tripod not included


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The mount has a "harmonic drive" in right ascension while in declination it uses the crown and VSF with the "quick-lock" locking system easy to balance and with zero backlash!
This choice brings the advantage of the harmonic motion in AR which can support telescopes without counterweights, a lower cost of the mount and the possibility of balancing the declination axis!
Thanks to this combination of mechanical elements, the mount head weighs only 3.7kg but holds telescopes up to 13.5kg, 3.65 times its weight!
Ioptron is slowly abandoning the use of cast aluminum for its frames, the HEM27 is in fact made entirely of steel and black anodized CNC machined aluminum ... durable materials for a unique frame of its kind!
The HEM27 also has two important features: in the event of a power failure, an electronic clutch comes in handy that blocks the RA axis even if very unbalanced, in this way there is no risk that the mount can move by itself and go bump somewhere! In addition, the computer automatically keeps the previous alignment in memory, so when the power returns, the mount knows exactly where it is pointing, starts tracking in AR and there is no need to redo any alignment procedure!
The iPolar polar scope is always present, for easy and precise alignment to the pole by computer!
The mount accepts the (optional) 1.75" literock tripods and the new iOptron carbon tripod (optional)


  • Advanced harmonic motion technology
  • Load capacity of 13.5 kg (29.7 lbs) and a head weight of only 3.7 kg (8.15 lbs)
  • Head made of anodized CNC aluminum
  • Electronic clutch that locks the mount during a scheduled, or unscheduled, power failure
  • Rotation period of the gear of 360 seconds
  • Permanent Periodic Error Correction (PPEC)
  • Go2Nova® computer with 212,000 object database
  • IPolar electronic polar scope for precise and easy polar alignment
  • Fully internal wiring system
  • Robust clamp with double losmandy and vixen ends
  • Automatic search of the ZERO position
  • Mount position and alignment memory when it is switched off
  • Integrated ST4 port
  • Integrated Wifi (via push button panel)
  • UsB port for upgrade and mount control
  • Soft padded bag
  • 2 year guarantee

Additional Information

Additional Information

NameiOptron HEM27 Hybrid Harmonic Drive Mount
Warranty2 Years
Mount typeHarmonic Equatorial Mount


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