iOptron HEM27 Mount iPolar: hybrid EQ mount with electronic polar scope
The iOptron HEM27 is a hybrid equatorial mount: strain wave drive on the right ascension axis, backlash-free worm and belt drive on the declination axis. Without a counterweight, it carries 13.5 kg (29.7 lbs) with a head weight of only 3.7 kg (8.15 lbs).
This model features a built-in iPolar electronic polar scope: you align with the celestial pole on your laptop screen, quickly and accurately, even without a clear view of the North Star.
That makes this the complete lightweight photo mount: no counterweight, no guesswork when aligning.



Align on screen
The iPolar camera shows the celestial pole and the direction of the polar axis; the software calculates with date, time, and refraction. Within a few minutes, the mount is set up precisely.
Precise polar alignment is especially valuable with strain wave mounts: the smaller the residual error, the longer you can image unattended.

Hybrid drive without counterweight
The combination of strain wave on RA and worm/belt on declination provides the load capacity of a harmonic drive with the refined tracking behavior of a traditional drive. A counterweight is unnecessary in most setups.
The electronic friction brake safely stops the mount during a power failure, and the power-down memory preserves position and alignment.

Complete control
The Go2Nova 8409 hand controller contains over 200,000 objects; Wi-Fi is routed through the hand controller, and computer control is possible via ASCOM, INDI, or iOptron Commander. Autoguiding via the ST-4 port and PEC correction are built-in.
The internal cable management and the dual Vixen/Losmandy-D saddle keep the photo setup tidy; the built-in zero-position finder automatically finds the starting position.
Included
- HEM27 mount with built-in iPolar
- Go2Nova 8409 Hand Controller
- Transport bag
- Power supply and USB cable
Featured accessories
Add the 14 cm MiniPier for the HEM27 for clearance around the zenith, and the HEM27 counterweight shaft for heavier setups.
For whom yes and for whom no
- ✓ Astrophotographers who travel light and want precise alignment
- ✓ Who is photographing without a clear view of Polaris
- If you want to take photos without guiding: choose the HEM27EC
Specifications
| Type | Hybrid EQ mount, strain wave RA plus worm/belt DEC |
| Carrying capacity | 13.5 kg (29.7 lbs), without counterweight |
| Head of weight | 3.7 kg (8.15 lbs) |
| Manual | Go2Nova 8409, over 200,000 objects |
| Friction brake | Electronic |
| Connections | WiFi (via manual control), USB, ST-4 |
| Saddle | Dovetail, Vixen, and Losmandy-D |
| Tripod | Not included |
| Nutrition | 12 V DC |
| Pole finder | iPolar electronic, built-in |
You can find more mounts and accessories for this merk at the iOptron merk page.





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