Description
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 unparallel 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 GEM28A 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.
Shipping Box #1: G281A-GEM28 Head w/ iPolar/Tray (G281A)
Shipping Box #2: 8283-CEM26/GEM28 LiteRoc Tripod w/o Tray (C26/G28 LiteRoc)Manual:
Quick Start Guide
Instruction Manual
iPolar Operation Manual
Firmware and Software:
Download Latest Firmware
iPolar Software
iOptron Telescope ASCOM Driver:
Install ASCOM Driver and Commander
* OTA size and length dependent, smaller than 6" in diameter recommended
** Measured with encoder on bench, 10 minutes
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 unparallel 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 GEM28A 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.
Shipping Box #1: G281A-GEM28 Head w/ iPolar/Tray (G281A)
Shipping Box #2: 8283-CEM26/GEM28 LiteRoc Tripod w/o Tray (C26/G28 LiteRoc)Manual:
Quick Start Guide
Instruction Manual
iPolar Operation Manual
Firmware and Software:
Download Latest Firmware
iPolar Software
iOptron Telescope ASCOM Driver:
Install ASCOM Driver and Commander
Specifications
| 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 | ?88mm, 144 teeth aluminum |
| Declination worm wheel | ?88mm, 144 teeth aluminum |
| Right Ascension axis shaft | ?35mm steel |
| Declination axis shaft | ?35mm steel |
| Right Ascension bearing | ?55mm ball bearing |
| Declination bearing | ?55mm ball bearing |
| Worm gears | ?15.2mm, 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 | iPolar TM electronic 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 requiremention | 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 | ?20X200mm (M16), Stainless Steel |
| Shaft extension | ?20X120mm (M16), Stainless Steel |
| Counterweight | 10 lbs (4.5kg) |
| Tripod | LiteRoc heavy-duty stainless steel tripod w/ vibration suppression pads (7.5kg) |
| Dovetail saddle | 3.8" Vixen-style, center 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, smaller than 6" in diameter recommended
** Measured with encoder on bench, 10 minutes
Additional Resources
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