iOPTRON HEM27EC HARMONIC DRIVE MOUNT W/ ENCODER
iOptron
Equatorial
Payload: 13.5 kg without counterweight, 20 kg with counterweight
3.7 kg
iOPTRON HEM27EC HARMONIC DRIVE MOUNT W/ ENCODER is backordered and will ship as soon as it is back in stock.
The new iOptron HEM27EC is an incredibly portable hybrid harmonic drive mount, weighing only 3.7kg and boasting a payload capacity of 13.5kg without needing counterweights and 20kg with the addition of a 4.5kg counterweight! The EC version includes a high resolution encoder on the RA axis for accurate unguided imaging.
Utilizing modern harmonic drive (strain wave gear) technology for the RA axis and backlash-free belt-driven worm gear on the DEC axis, the HEM27 is capable of unparalleled weight to payload efficiency.
The mount is completely CNC-machined and anodized for strength, lightness and durability. The mount is equipped with an electronic friction break and power down memory, allowing the mount to safely stop and resume slewing or continue tracking even after sudden power loss.
Note: The HEM27EC does not include a tripod. You can purchase the iOptron Carbon Fibre Tripod separately.
Features:
- Advanced harmonic drive technology
- Lightweight at 3.7kg (with saddle)
- Payload capacity of 13.5kg
- CNC-machined body
- Go2Nova hand controller with 212,000 object database
- Unique friction brake to safely stop mount if power is lost
- 360 second gear period
- Through-mount cable management system
- Dual Vixen & Losmandy saddle
- Built-in zero positioning system
- High precision encoder with realtime PEC (RPEC)
- Integrated ST-4 autoguiding port
- Built-in Wi-Fi (via hand controller)
- USB port for firmware upgrade and computer control
- 2 Year manufacturer's warranty
Specifications
| Mount |
Hybrid harmonic drive equatorial mount |
|---|---|
| Gear | Strain wave 17 (RA)/worm gear (DEC) |
| RA Reduction ratio |
120 |
| Mount weight (w/o dovetail saddle) | 3.4 kg (7.49 lbs) |
| Mount weight (w dovetail saddle) |
3.7 kg (8.15 lbs) |
| Max payload (w/o CW) at 200 mm | 13.5 kg/29.74 lbs (20kg with 4.5kg counterweight) |
| Payload/weight ratio | 3.65 |
| Period | 360 sec |
| Structure Material | All metal, CNC machined |
| Exterior Finish | Anodized black |
| Drive motor | Stepper motor |
| Latitude Range | 15° - 65° |
| AZ adjust range | ±5° |
| Power | DC 12V - 5A |
| Power consumption | 0.5A (tracking), 1A (GoTo) |
| Control system | GotoNova / Commander software |
| Hand controller | Go2Nova® 8409 with ~212,000 objects database |
| Communication | USB, Wi-Fi |
| Autoguide port | ST4 |
| Dovetail saddle | Vixen & Losmandy |
| Cable | No floating cables |
| Cable management | 2 x 12V (up to 4A), 1 x USB |
| Power off brake | Electronic friction brake |
| Power-down memory | Yes |
| PEC | Realtime Periodic Error Correction |
| Zero position search | Yes |
| Max go-to speed | 6°/Sec |
| Internal iPolar | No |
| High Precision encoder | Yes (on RA) |
| Temperature range | -20°C ~ 50°C (hand controller -10°C ~ 50°C) |
| Warranty | 2 years |
| SKU | IO-H274A |
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Mount type
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Payload capacity13.5 kg without counterweight, 20 kg with 4.5 kg counterweight
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Drive type
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Encoders
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Latitude range
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Azimuth adjustment range
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Dovetail saddle
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Slew speed
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Periodic error correction
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Polar scope
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Hand controller
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Wi-Fi
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TripodOptional
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Power jack5.5 x 2.1 mm
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Power supply
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Weight
