iOptron HEM27EC Hybrid Strain Wave Gear Mount with High Precision Encoder
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...
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.