Mahogany-croc "heritage luxury" (traditionalists) vs. pearl-white "modern classic" (nu-legacists)—materials as love languages.
Mahogany-croc "heritage luxury" (traditionalists) vs. pearl-white "modern classic" (nu-legacists)—materials as love languages. Mahogany-croc "heritage luxury" (traditionalists) vs. pearl-white "modern classic" (nu-legacists)—materials as love languages.
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GEM28 with iPolar in Hard Case

GEM28 with iPolar in Hard Case

$ 53.29

$ 69.28

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Product Details

 

Meet the GEM28: iOptron's Latest and Greatest in Compact German Equatorial Mounts!

Carrying the baton from its predecessors, the GEM28 is the epitome of portability, weighing just a mere 10 lbs. But don't let its light weight fool you—it can handle a whopping 28lb payload! That's a stellar 2.8-to-1 weight-to-payload ratio, achieved by incorporating design innovations from our CEM family of mounts. For folks who love the classic German EQ style and need performance at high latitudes, this mount is for you.

The GEM28 isn't just about maintaining a legacy; it's about improving upon it. We've thrown in user-friendly enhancements like a positive lock gear engagement system that's a breeze to operate, even with gloves on. Add in the built-in Wi-Fi for unparalleled device connectivity and a recordable Permanent Periodic Error Correction (PPEC) feature, and you get a mount that not only points precisely but tracks like a dream. Simply put, the GEM28 is the new gold standard in compact German equatorial goto mounts.

But wait, there's more. Our mount comes outfitted with the cutting-edge GOTONOVA® GOTO technology, making it one of the most accurate and robust GOTO mounts you'll find. With a massive object library of 212,000 celestial bodies, you'll never run out of sky to explore. Using the Go2Nova® Hand Controller is a snap, thanks to its 4-line LCD screen that makes telescope setup and object locating a piece of cake.

As for the GEM28A variant, it features an integrated iPolar electronic polar finder scope, ensuring dead-on alignment even when Polaris is playing hide-and-seek. The package also includes a 1.5" heavy-duty stainless steel tripod and an aluminum carrying case for easy transportation.

Ready to Unbox?

  • Box #1: GEM28 Head with iPolar, Case, and Tray (G282A)
  • Box #2: 1.5" Tripod for CEM26/GEM28, sans Tray (C26/G28 1.5T)

Key Features At a Glance:

  • Classic German equatorial design; latitude range from 10° to 70°
  • Perfect for visual observation and astrophotography
  • Low periodic error of less than ±12 arc seconds
  • Payload capacity of 28 lbs, while weighing just 10 lbs itself
  • Crafted from CNC machined and cast metal
  • Spring-loaded gear mechanism
  • Quick-lock gear clutches that are super easy to operate
  • Energy-efficient stepper motor
  • Built-in iOptron iPolar™ electronic polar scope
  • For folks who can't spot the Pole Star, we've got a polar alignment routine
  • Advanced GOTONOVA® GOTO Technology via Go2Nova® 8409 controller
  • Integrated ST-4 autoguiding port
  • In-built Wi-Fi connectivity
  • USB port for firmware updates and PC control
  • Standard 1.5-inch heavy-duty stainless steel tripod (weighs 5kg)
  • Die-cast metal tripod spreader with an accessory tray
  • Comes in a hard carrying case for ease of transport
  • Optional add-ons: 32-channel GPS and iGuider™ autoguiding system (#3360)

Specifications

MountGerman Equatorial Mount
Payload *28 lbs (12.7kg), exclude counterweight
Mount weight10 lbs (4.5kg)
Payload/Mount weight2.80
Structure MaterialAll metal, Casting CNC machined
Exterior FinishPowder coating
Periodic error (PE) **<±12 arcsec
PECYes, Permanent PEC
Worm period600 sec
Right Ascension worm wheelΦ88mm, 144 teeth aluminum
Declination worm wheelΦ88mm, 144 teeth aluminum
Right Ascension axis shaftΦ35mm steel
Declination axis shaftΦ35mm steel
Right Ascension bearingΦ55mm ball bearing
Declination bearingΦ55mm ball bearing
Worm gearsΦ15.2mm, Brass
Motor drive1.8º stepper motor, 128X microdivision
Resolution0.17 arc seconds
TransmissionSynchronous belt
Latitude adjustment range10º ~ 70º
Azimuth adjustment range± 6º
Polar ScopeiPolar TM electronic polar scope
Level indicatorLevel bubble
Hand ControllerGo2Nova® 8409 with ~212,000 objects database
TrackingAutomatic
Slew speed1×,2×,8×,16×,64×,128×,256×,512×,MAX(6º/sec)
Power consumption0.6A(Tracking), 0.9A(GOTO)
Power requiremention12V DC, 5A
AC adapter100V ~ 240V (included, for indoor use only)
Power-down memoryYes
Wi-FiBuilt-in
Communication portYes (Wi-Fi and USB)
Autoguide portYes (ST-4 compatible)
Firmware upgradeYes
PC computer controlYes (ASCOM)
Counterweight shaftΦ20X200mm (M16), Stainless Steel
Shaft extensionΦ20X120mm (M16), Stainless Steel
Counterweight10 lbs (4.5kg)
Tripod1.5" Stainless Steel (5kg)
Dovetail saddle3.8" Vixen-style, center adjustable
GPSOptional external 32-channel GPS
AutoguidingOptional external iGuider 1
Operation temperature-10ºC ~ 40ºC
WarrantyTwo year limited

* OTA size and length dependent, smaller than 6" in diameter is recommended
** Measured with encoder on, 10 minutes

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