iOptron GEM28EC Mount - Accurate, Quiet and Ready for Astrophotography
The iOptron GEM28EC is built for astrophotographers who want to combine precision and portability. Compact enough to take anywhere, but powerful enough to stably carry your heavy optics. This mount makes it easy to take pin-sharp, perfectly aligned shots - night after night.
Stable, light and cleverly designed
With a load capacity of up to 12.7 kg and an own weight of only 4.5 kg, the GEM28EC offers a perfect balance of power and mobility. Ideal for those who often shoot on location. Thanks to the LiteRoc tripod everything stays solid, even at longer exposure times.
Always perfectly aligned
The built-in iPolar electronic polar finder makes alignment easy, even when you can't see the North Star. You save time and get instant accurate tracking - keeping your images clear and sharp.
Smart technology, effortless control
With the latest Go2Nova® technology navigate effortlessly through a database of 212,000 sky objects. The hand controller with bright LCD screen is intuitive to use, even with gloves on. And thanks to the built-in WiFi system you can control the mount directly from your laptop, tablet or smartphone.
Smooth and quiet tracking
The EC version offers an advanced encoder correction (PEC), which reduces tracking errors to less than ±10 arc seconds. This means smooth, precise movements - ideal for long exposures without distracting aberrations. The quiet belt drive also ensures smooth transitions without vibrations.
Ready for every session
With Easy Polar Alignment you are ready for observation or photography within minutes. The robust CNC milled mounting head and quick fasteners make setup easy, even in the dark. Optionally add GPS or iGuider autoguiding for even more convenience.
What you get is a trusted partner who helps you see, capture and discover more - without the hassle.
Specifications
Capacity
| Feature | Description |
|---|---|
| Type of mount | GEM |
| Max. load capacity | 12.7 kg |
| Pole adjustment | 10°-70° |
| Own weight | 4.5 kg |
Drive & Tracking
| Feature | Description |
|---|---|
| Motor speed | 1-512× |
| Accuracy tracking | 0.17″ |
| Periodic error | < ±10″ |
| Drive type | Worm wheel with belt drive |
| PEC correction | Yes (permanent) |
Technology & Software
| Feature | Description |
|---|---|
| Controls | Go2Nova® |
| Database | 212,000 objects |
| Display | Backlit LCD |
| Connections | USB, ST-4, HBX, DEC |
| WiFi | Yes |
| Autoguiding | Yes |
| GPS | Optional |
| Computer control | Yes |
| Firmware update | Yes via the internet |
Construction & Design
| Feature | Description |
|---|---|
| Material mount | CNC milled metal |
| Counterweight | 1 × 4.5 kg (steel) |
| Counterweight bar | Ø 20 mm |
| Tripod Material | Stainless steel |
| Tripod weight | 7 kg |
| Total set weight | 22 kg |
Usage & Alignment
| Feature | Description |
|---|---|
| Alignment methods | 1-, 2-, or 3-star alignment |
| Polar alignment | Easy Polar Alignment |
| Pole finder | iPolar electronic |
| Tracking speeds | Stars, Sun, Moon |
Other
| Feature | Description |
|---|---|
| Series | GEM28 |
| Color | Black and red |
| Accessory holder | Yes |
| Transport case | Yes |
| Operating temperature | -10° to +40°C |
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