iOptron GEM45EC EQ Mount With Literoc Tripod And Hard Case

iOptron GEM45EC GoTo Equatorial Mount with High-Resolution Encoder, LiteRoc Tripod, and Hard Case

Catalog #: 7603ECA

Precision Tracking. Portable Design. Pro-Level Performance.

The iOptron GEM45EC is built for astrophotographers and visual observers who want precision without compromise. With its high-resolution encoder, robust CNC-machined construction, and compact 15.8 lb mount head, the GEM45EC delivers exceptional tracking accuracy and surprising payload capacity in a field-friendly package.

Designed using insights from iOptron's Center-Balanced Mount (CEM) series, the GEM45EC leverages a classic German equatorial layout while trimming unnecessary bulk. The result is a sleek, modern mount that offers a 2.8:1 payload-to-weight ratio, supporting up to 45 pounds (20 kg) of gear while remaining light enough for travel and remote field setups. Whether you're imaging faint galaxies at long focal lengths or conducting high-resolution planetary work, the GEM45EC gives you the tools you need to deliver results.

Features & Benefits

At the heart of the GEM45EC is a high-resolution optical encoder on the right ascension axis. This advanced feedback system enables Real-Time Periodic Error Correction (RPEC) and provides tracking precision better than 0.25 arcseconds RMS. For astrophotographers, this level of accuracy means tighter stars and fewer corrections during autoguiding—making it possible to push longer exposure times with more consistent results. For planetary imagers or those shooting at long focal lengths, it's a game-changer.

The mount is equipped with precision-machined brass worm gears (110mm diameter, 216 teeth) and 45mm stainless steel RA and DEC axes, each supported by massive 68mm bearings. This combination provides the kind of mechanical stability typically reserved for much heavier, observatory-grade mounts. Add in iOptron’s synchronous belt transmission system, and you've got a drivetrain with virtually zero backlash and ultra-smooth motion across both axes.

Polar alignment is made incredibly easy with the built-in iPolar electronic polar scope. Whether Polaris is visible or not, the iPolar system offers a fast, accurate solution that saves you time in the field. The latitude adjustment range of 14° to 68° and a full ±6° azimuth range ensure the mount can be dialed in anywhere from the desert southwest to high-latitude international observatories.

The Go2Nova 8407+ hand controller includes a massive database of over 212,000 celestial objects, with user-defined storage, star identification tools, and fast, intuitive GoTo commands. The controller is designed with cold-weather observing in mind, featuring a built-in LCD heater to maintain visibility even on frigid nights. The GEM45EC also includes a 32-channel internal GPS module, so your time, date, and location are automatically set—no fumbling with coordinates in the dark.

Connectivity options include a USB communication port, ST-4 autoguiding port, and RS232 serial connection. Optional Wi-Fi control is available using iOptron’s iStarFi adapter, giving you the option to wirelessly manage the mount from your smartphone, tablet, or laptop.

The Universal Self-Centering Saddle (USCS) accommodates both Vixen and Losmandy dovetail plates up to 6" in length. This ensures secure, balanced OTA mounting with no additional adapter plates required. It’s spring-loaded and mechanically indexed to keep your payload centered every time you change instruments.

Rounding out the package is the new LiteRoc 1.75" tripod, a stainless steel, field-ready platform that combines excellent rigidity with reduced weight. The tripod is paired with a solid die-cast spreader and reinforced leg locks for fast setup and transport. A custom hard case is also included to protect the GEM45EC mount head during storage or travel.

Observing Tip

This mount thrives under both dark skies and in the backyard. For the best unguided performance, carefully balance your payload and take advantage of the built-in RPEC. When combined with short focal length refractors and modern CMOS cameras, you'll be amazed at the pinpoint star fields you can achieve in a truly portable setup.

Final Thoughts

The iOptron GEM45EC is a field-ready workhorse with performance specs that rival far larger mounts. Its lightweight design, CNC build quality, and <0.25 arcsecond tracking precision make it a top-tier choice for astrophotographers who demand more without sacrificing portability. Whether you're upgrading from a beginner setup or looking for a travel-friendly mount with professional-grade tracking, the GEM45EC delivers in every category.