SKU: G282B3

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  • $1,278.00
  • Regular price $1,598.00

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  • NEW Built-in Wi-Fi
  • German equatorial design, latitude range of 10° ~ 70°
  • Ideal for both visual observation and astrophotography
  • Low periodic error (< ± 10 arc seconds)
  • Payload of 12.7 kg (28 lbs) with the mount-only weight of 4.5 kg (10 lbs)
  • CNC machined and cast metal body
  • Spring loaded gear system
  • Large easy to use quick-lock gear clutches
  • Stepper motor with low power consumption
  • Integrated iOptron iPolarTM electronic polar scope
  • Polar alignment routine for those who can’t see the Pole Star
  • Go2Nova® 8409 controller with Advanced GOTONOVA® GOTO Technology
  • Integrated ST-4 autoguiding port
  • Built-in Wi-Fi
  • USB port for firmware upgrade and computer control
  • Standard LiteRoc heavy-duty stainless steel tripod w/ vibration suppression pads (7.5kg)
  • Die-cast metal tripod spreader with accessory tray
  • Hard carrying case
  • Optional 32-channel Global Positioning System (GPS)
  • Optional iGuiderTM autoguiding system (#3360)

    Introducing iOptron’s new compact next-generation german equatorial mount the GEM28! 

    Like their predecessors, the GEM28 is designed with portability in mind, weighing in at only 10 lbs it can support up to a 28lb payload an incredible 2.8 mount weight to payload ratio. 

    Building on the legacy of earlier GEM models we have added features for convenience and functionality. A positive lock gear engagement system (easy to use even when wearing gloves), Built-in Wi-Fi enabling unparalleled connectivity and recordable permanent periodic error correction (PPEC) to repeat optimal PEC training sessions. Regarding functionality the GEM28 delivers precise pointing and accurate tracking. The 212,000 object library ensures you’ll never run out of targets to see or image. The GEM28 sets the new standard for compact equatorial mounts. 

    The GEM28 is equipped with the latest advanced GOTONOVA® GOTO technology, making it one of the most powerful and accurate GOTO mounts available. Its database includes over 212,000+ objects. The Go2Nova® Hand Controller is intuitive to use and its large 4-line LCD screen simplifies the process of setting telescopes and locating objects. 

    The GEM28 mount has an optional integrated electronic polar finder scope known as the iPolar. A high resolution optical encoder with real-time PEC delivers accurate tracking with PE <0.3 arcsec RMS. Built-in Wi-Fi enabling unparallel connectivity. The GEM28EC sets the new standard for compact German equatorial goto mounts.


    The GEM28EC mount has an integrated electronic polar finder scope known as the iPolar. This tool ensures the accurate alignment of a telescope, even when the pole star is obscured. It comes with a LiteRoc heavy duty stainless steel tripod and an aluminum carrying case

    Shipping Box #1: G284A-GEM28EC Head w/ iPolar/Case/Tray (G284A)
    Shipping Box #2: 8283-CEM26/GEM28 LiteRoc Tripod w/o Tray (C26/G28 LiteRoc)

      Mount German Equtorial Mount
      Max payload* 12.7 kg (28 lbs), exclude CW
      Mount weight 4.5 kg (10 lbs)
      Payload/Mount weight 2.8
      Structure Material All metal, Casting + CNC machined
      Exterior Finish Powdwer coating 
      Latitude adjustment range 10° ~ 70°
      Azimuth adjustment range ± 6°
      Tracking accuracy (PE)** GEM28 <±10arcsec / GEM28EC <0.3 arcsec  RMS 
      PEC PPEC/Realtime PEC (GEM28EC)
      Period 600 sec
      Worm diameter Φ15.2 mm, Brass
      Right Ascension worm wheel Φ88 mm, 144 teeth, zero backlash 
      Declination worm wheel Φ88 mm, 144 teeth, zero backlash 
      Right Ascension axis shaft Φ35mm steel
      Declination axis shaft Φ35mm steel
      Right Ascension bearings Φ55mm ball bearing
      Declination bearings Φ55mm ball bearing
      Counterweight shaft Φ20X200 mm (M16), Stainless Steel 
      Shaft extension Φ20X120 mm (M16), Stainless Steel 
      Counterweight 4.5kg (10 lbs) X1
      Motor Precision stepper motor, 1.8°/128X micro-step
      Motor resolution 0.17 arcsec 
      Transmission Synchronous belt
      Hand Controller Go2Nova® 8409, 4 line 21 character LCD
      Star Database 212,000+, star identification
      Power DC 12V, 5A
      AC adapter 100V ~ 240V (included)
      Power consumption 0.6A(Tracking), 0.9A(GOTO)
      Polar scope AccuAlign TM polar scope/Internal iPolar TM 
      Meridian treatment Stop (0-10° pass), flip
      Dovetail saddle 3.8" Vixen, center adjustable
      Max slew speed 6°/sec (1440x)
      Guiding port ST-4
      Communication port USB, WiFi
      WiFi Built in WiFi
      Tripod 1.5" Stainless Steel, optional LiteRoc
      Hard case GEM28 optional, GEM28EC included
      GPS optional/external
      Autoguiding Optional external iGuider
      Operation temperature -10ºC ~ 40ºC
      Warranty Two year limited


      The GEM28 ECON does NOT come with a supporting tripod or pier; it has an AccuAlignTM optical polar scope installed for quick and easy polar alignment.