Introducing iOptron’s new compact next-generation German equatorial mounts 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. We achieved this using design methods developed to reduce mount mass in our CEM family of mounts. The German EQ versions were created to satisfy consumer that prefer a more traditional mount and to function at higher latitudes.

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 GEM28 sets the new standard for compact German equatorial goto mounts.

The GEM28 is equipped with the latest advanced GOTONOVA® GOTO technology, making it one of the most powerful and accurate GOTO mounts available. The 212,000 object library ensures you’ll never run out of targets to see or image. 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 CEM28B mount has an AccuAlignTM optical polar scope installed for quick and easy polar alignment. It comes with a 1.5″ heavy duty stainless steel tripod.

Features

  • 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
  • AccuAlignTM calibrated 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 1.5 inch heavy-duty stainless steel tripod (5kg)
  • Die-cast metal tripod spreader with accessory tray
  • Optional hard carrying case
  • Optional 32-channel Global Positioning System (GPS)
  • Optional iGuiderTM autoguiding system (#IOPTRON-3360)

Technical Specs

Mount German Equatorial Mount
Payload * 28 lbs (12.7kg), exclude counterweight
Mount weight 10 lbs (4.5kg)
Payload/Mount weight 2.80
Structure Material All metal, Casting + CNC machined
Exterior Finish Powder coating
Periodic error (PE) ** <±10 arcsec
PEC Yes, Permanent PEC
Worm period 600 sec
Right Ascension worm wheel Φ88mm, 144 teeth aluminium
Declination worm wheel Φ88mm, 144 teeth aluminium
Right Ascension axis shaft Φ35mm steel
Declination axis shaft Φ35mm steel
Right Ascension bearing Φ55mm ball bearing
Declination bearing Φ55mm ball bearing
Worm gears Φ15.2mm, Brass
Motor drive 1.8º stepper motor, 128X microdivision
Resolution 0.17 arc seconds
Transmission Synchronous belt
Latitude adjustment range 10º ~ 70º
Azimuth adjustment range ± 6º
Polar Scope AccuAlignTM calibrated polar scope
Level indicator Level bubble
Hand Controller Go2Nova® 8409 with ~212,000 objects database
Tracking Automatic
Slew speed 1×,2×,8×,16×,64×,128×,256×,512×,MAX(6º/sec)
Power consumption 0.6A(Tracking), 0.9A(GOTO)
Power requirements 12V DC, 5A
AC adapter 100V ~ 240V (included)
Power-down memory Yes
Wi-Fi Built-in
Communication port Yes (Wi-Fi and USB)
Autoguide port Yes (ST-4 compatible)
Firmware upgrade Yes
PC computer control Yes (ASCOM)
Counterweight shaft Φ20X200mm (M16), Stainless Steel
Shaft extension Φ20X120mm (M16), Stainless Steel
Counterweight 10 lbs (4.5kg)
Tripod 1.5″ Stainless Steel (5kg)
Dovetail saddle 3.8″ Vixen-style, centre adjustable
GPS Optional external 32-channel GPS
Autoguiding Optional external iGuider 1
Operation temperature -10ºC ~ 40ºC
Warranty Two year limited

* OTA size and length dependent
** Measured with encoder, 10 minutes

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iOptron GEM28B German Equatorial Mount

SKU: N/A

$2,265.00$2,685.00

✅ Fast Shipping & Tracking
✅ Stocked in Melbourne, Australia
✅ Expert Advice
✅ Lifetime Technical Support

    Need Expert Advice?

    Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

    Enquire now or call us (03) 9042 2293

    iOptron GEM28B German Equatorial Mount

    SKU: N/A

    $2,265.00$2,685.00

    Introducing iOptron’s new compact next-generation German equatorial mounts 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. We achieved this using design methods developed to reduce mount mass in our CEM family of mounts. The German EQ versions were created to satisfy consumer that prefer a more traditional mount and to function at higher latitudes.

    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 GEM28 sets the new standard for compact German equatorial goto mounts.

    The GEM28 is equipped with the latest advanced GOTONOVA® GOTO technology, making it one of the most powerful and accurate GOTO mounts available. The 212,000 object library ensures you’ll never run out of targets to see or image. 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 CEM28B mount has an AccuAlignTM optical polar scope installed for quick and easy polar alignment. It comes with a 1.5″ heavy duty stainless steel tripod.

    Features

    • 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
    • AccuAlignTM calibrated 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 1.5 inch heavy-duty stainless steel tripod (5kg)
    • Die-cast metal tripod spreader with accessory tray
    • Optional hard carrying case
    • Optional 32-channel Global Positioning System (GPS)
    • Optional iGuiderTM autoguiding system (#IOPTRON-3360)

    Technical Specs

    Mount German Equatorial Mount
    Payload * 28 lbs (12.7kg), exclude counterweight
    Mount weight 10 lbs (4.5kg)
    Payload/Mount weight 2.80
    Structure Material All metal, Casting + CNC machined
    Exterior Finish Powder coating
    Periodic error (PE) ** <±10 arcsec
    PEC Yes, Permanent PEC
    Worm period 600 sec
    Right Ascension worm wheel Φ88mm, 144 teeth aluminium
    Declination worm wheel Φ88mm, 144 teeth aluminium
    Right Ascension axis shaft Φ35mm steel
    Declination axis shaft Φ35mm steel
    Right Ascension bearing Φ55mm ball bearing
    Declination bearing Φ55mm ball bearing
    Worm gears Φ15.2mm, Brass
    Motor drive 1.8º stepper motor, 128X microdivision
    Resolution 0.17 arc seconds
    Transmission Synchronous belt
    Latitude adjustment range 10º ~ 70º
    Azimuth adjustment range ± 6º
    Polar Scope AccuAlignTM calibrated polar scope
    Level indicator Level bubble
    Hand Controller Go2Nova® 8409 with ~212,000 objects database
    Tracking Automatic
    Slew speed 1×,2×,8×,16×,64×,128×,256×,512×,MAX(6º/sec)
    Power consumption 0.6A(Tracking), 0.9A(GOTO)
    Power requirements 12V DC, 5A
    AC adapter 100V ~ 240V (included)
    Power-down memory Yes
    Wi-Fi Built-in
    Communication port Yes (Wi-Fi and USB)
    Autoguide port Yes (ST-4 compatible)
    Firmware upgrade Yes
    PC computer control Yes (ASCOM)
    Counterweight shaft Φ20X200mm (M16), Stainless Steel
    Shaft extension Φ20X120mm (M16), Stainless Steel
    Counterweight 10 lbs (4.5kg)
    Tripod 1.5″ Stainless Steel (5kg)
    Dovetail saddle 3.8″ Vixen-style, centre adjustable
    GPS Optional external 32-channel GPS
    Autoguiding Optional external iGuider 1
    Operation temperature -10ºC ~ 40ºC
    Warranty Two year limited

    * OTA size and length dependent
    ** Measured with encoder, 10 minutes

    Reviews

    There are no reviews yet.

    Be the first to review “iOptron GEM28B German Equatorial Mount”

    Your email address will not be published. Required fields are marked *

      Need Expert Advice?

      Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

      Enquire now or call us (03) 9042 2293