IOptron GEM 45 German Equitorial Mount

iOptron Corporation SKU: 7603A


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Utilizing lessons learned during development of our CEM series, we were able to remove unnecessary bulk giving the GEM45 an incredible 2.7 payload to mount weight ratio. This compact 15.8Ib mount can precisely GOTO an object and track with up to 45Ibs of gear onboard. With its integrated electronic polar scope (iPolar)polar alignment is a snap, even when the pole star is obscured.


Large levers on the quick-lock drive engagement system make it easy to snap its gears into place even when wearing gloves. There's little chance of your cables getting snagged with the GEM45's internal advanced cable management system. A new, patent-pending Universal Self-Centering Saddle (USCS) accommodates Losmandy and Vixen style dovetail plates. Both GEM45 and GEM45EC mounts utilize reliable stepper motor drive systems with our low power consumption technology.


Looking for ultra precise tracking, the EC version with its high-resolution encoder delivers a PE <.25 arcsecond rms. Our new LiteRoc 1.75"tripod delivers rock solid stability in a lighter, more compact package. A 212,000+ object library with star identification, GPS, Wi-Fi (requires optional iStarFi adapter) are a few of the desirable features standard on a GEM45 or GEM45EC mount.


• German equatorial design with innovative features
• Ideal for both visual observation and astrophotography
• Large easy to use quick-lock gear clutches
• Integrated iPolar™ electronic polar finder
• Max payload of 45Ibs (20.4 kg) with the mount weight of
  only 15.8Ibs (7.2 kg)
• Precision stepper motors yielding accurate GOTO pointing and precise tracking
• Go2Nova® 8407+ controller with advanced GOTONOVA® GOTO technology with built in heater
• PEC <+/- 7 arc-sec (GEM45), <.25 arc-sec rms (GEM45EC)
• Permanent PEC (PPEC) GEM45, real time PEC (RPEC) GEM45EC
• 32-channel Global Positioning System (GPS)
• Integrated ST-4 auto guiding port
• Advanced cable management system with more choices
• New, patent-pending iOptron universal self centering saddle
• Optional WiFi
• CNC machined metal body
• All new LiteRoc 1.75" tripod with improved stability and leg locks