From $1,448.00
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The iOptron GEM28 is a compact, ultra-portable German equatorial GoTo mount designed for amateur and mobile astrophotographers seeking high performance in a lightweight package. Weighing only 10 pounds while supporting up to 28 pounds of payload, the GEM28 delivers precision tracking with stepper motors and dual-axis encoders, plus the integrated iPolar electronic polar scope for accurate alignment even when the North Star is obscured. With over 212,000 object catalog, Wi-Fi connectivity, and quiet belt-driven motion on both axes, this mount enables serious astrophotography and long-exposure imaging from backyard to dark site.
| Payload Capacity | 28 lb |
| Latitude Range | 10° |
| Motor Type | Dual-Axis Stepper Motors with Encoders |
| iPolar Alignment Precision | 30″ |
| Polar Scope | iPolar Electronic Polar Finder |
| Tripod Type | 1.5 inch Stainless Steel |
| Object Database | 212000 |
| Right Ascension Shaft Diameter | 30 mm |
| iPolar Field of View | 13° |
| Connectivity | Wi-Fi, USB, ST-4 Autoguider Port |
| Declination Shaft Diameter | 30 mm |
| iPolar Resolution | 30″ |
| Hand Controller | Go2Nova 8409 |
| Construction | CNC Machined Metal Body with Black Powder Coating |
| Mount type | German Equatorial |
| Mount-to-Payload Ratio | 2.8:1 |
| Tracking Resolution | 0.17″ |
| GoTo System | GoToNova with Go2Nova 8409 Controller |
| Drive System | Synchronous Belt Transmission |
| Periodic Error Correction | Permanent Periodic Error Correction (PPEC) |
| Mount Weight | 10 lb |
| Drive Gears | 144-tooth, 88mm diameter brass worm gears |
| Dovetail Mount | Vixen-Style |
| Counterweight | 10 kg |