Meet the HEM27 and HEM27EC, iOptron's groundbreaking mounts that combine hybrid strain wave drive tech to redefine your stargazing game. Picture this: a mount head that tips the scales at just 8.15lbs but can shoulder a payload of 29.74lbs—no awkward counterweight or shaft needed. With years of expertise in crafting high-precision mounts, iOptron turns this concept into a real deal with the HEM27 series.
The HEM27 models employ cutting-edge strain wave drive technology for Right Ascension (RA) coupled with a backlash-free worm and belt drive in Declination (DEC), maximizing weight-to-payload efficiency like never before. Not only is its CNC-machined body clad in black anodized metal a sight to behold, but it's also a durable workhorse guaranteed to perform for years on end. Bonus perks? An electronic friction brake and power-down memory mean you can safely halt or pick up where you left off—even after a sudden power cut. No need to recalibrate or start over.
You can take the reins of your HEM27 mount via a PC with ASCOM/Commander on Windows, third-party INDI drivers for MacOS, iOptron Commander Lite or apps like SkySafari on smartphones and tablets, or even a Raspberry Pi device using INDI.
Want to take it up a notch? The HEM27EC comes with a high-precision RA axis encoder for super-accurate tracking, making auto-guiding optional for many users.
Curious about a low-latitude range? HEM27 mounts are available for special orders at 0~22 degrees.
Feature Round-Up
- Cutting-edge strain wave drive tech
- Payload: 29.7 lbs; Mount weight: 8.15 lbs
- CNC-machined, black anodized body
- Electronic friction brake for power interruptions
- Gear period of 360 seconds
- High-precision encoder with Realtime PEC (RPEC)
- Go2Nova® hand controller featuring ~212k object database
- iPolar electronic polar scope for no-fuss polar alignment
- Neat cable management—zero hanging cables
- Dual saddle compatible with Vixen and Losmandy-D
- Zero position search and locator
- Memory for power-down positions
- Integrated ST-4 autoguiding port
- Onboard Wi-Fi via hand controller
- USB port for firmware updates and computer control
- Comes with a soft carrying case
- Two-year warranty
Discover more about the HEM27 mount today!
Specifications
| Mount |
Hybrid Equatorial Mount |
| RA gear system |
StrainWave 17 |
| DEC gear system |
Backlash-free worm/belt system |
| RA reduction ratio |
480:1 |
| Payload w/o CW * |
29.74 lbs (13.5kg) |
| Mount weight |
7.49lbs (3.4kg) w/o dovetail saddle
8.15 ls (3.7kg) with dovetail saddle |
| Payload/Mount weight |
3.65 |
| Payload with CW * |
44 lbs (20kg) |
| Period |
360 second |
| Drive motor |
Stepper motor |
| Structure Material |
All metal, CNC machined |
| Exterior finish |
Anodized black |
| High precision encoder |
Yes (RA) |
| PEC |
Yes, Realtime PEC |
| Latitude adjustment range |
15º ~ 65º |
| Azimuth adjustment range |
± 5º |
| Polar Scope |
iPolar electronic polar scope |
| Level indicator |
Level bubble |
| Control system |
GOTONOVA/Commander |
| Hand Controller |
Go2Nova® 8409 with ~212,000 objects database |
| Tracking |
Automatic |
| Maximum slew speed |
6º/sec |
| Power consumption |
0.5A(Tracking), 1A(GOTO) |
| Power requiremention |
DC12V-5A (5.5/2.5mm DC plug) |
| AC adapter |
100V ~ 240V (included, indoor use only) |
| Cable |
No moving/wrapping |
| Cable management |
2X12V (4A max.), 1X USB2.0 |
| Power off brake |
Electronic friction brake |
| Power-down memory |
Yes |
| Wi-Fi |
Built-in |
| Communication port |
Yes (Wi-Fi and USB) |
| Autoguide port |
Yes (ST-4 compatible) |
| Firmware upgrade |
Yes |
| Dovetail saddle |
Vixen & Losmandy |
| Tripod |
Optional |
| Counterweight shaft |
SS Φ20X200mm, M16 thread (Optional) |
| Counterweight |
10 lbs (4.5kg) (Optional) |
| Operation temperature |
-20ºC ~ 40ºC (hand controller -10ºC ~ 40ºC) |
| Warranty |
Two year limited |
* 200mm, with payload center of gravity to the RA rotation axis. Or an OTA size of ~220mm.
