Meet the next-gen GEM28 by iOptron, your go-to compact German equatorial mount! Designed for easy portability, this bad boy weighs just 10 lbs but can hold a payload of up to 28 lbs. That's a stellar 2.8-to-1 weight-to-payload ratio, thanks to the same design techniques we've honed in our CEM mounts. Prefer the traditional German EQ setup and live at higher latitudes? This mount's got you covered.

We've packed the GEM28 with a ton of upgrades to make your life easier and your stargazing sharper. A glove-friendly positive lock gear system, built-in Wi-Fi for seamless connectivity, and recordable PPEC for consistent performance—what's not to love? Precision pointing and rock-solid tracking are just the cherry on top, setting a new benchmark for compact German equatorial mounts with goto capabilities.

Under the hood, the GEM28 sports cutting-edge GOTONOVA® GOTO tech, with a mind-boggling 212,000-object library. The user-friendly Go2Nova® controller makes setup a breeze, and its 4-line LCD screen keeps things straightforward.

Oh, and did we mention polar alignment is a cinch? The AccuAlign™ optical polar scope is there to help you line things up in a jiffy. All of this comes on a sturdy LiteRoc stainless steel tripod, and it's all packed into an aluminum case for travel ease.

What's in the Box?

Box #1: G282B-GEM28 Head, complete with AccuAlign, case, and tray.
Box #2: The 8283 LiteRoc tripod without a tray, designed for both the CEM26 and GEM28.

Feature Highlights

German equatorial design with a latitude range from 10° to 70°
Perfect for both visual stargazing and astrophotography
Impressive low periodic error of < ± 12 arc seconds
Carries up to a 28-lb payload while weighing only 10 lbs
Crafted from CNC machined and cast metal
Spring-loaded gear system and big, easy-to-use quick-lock clutches
Energy-efficient stepper motor
AccuAlign™ polar scope, calibrated for quick polar alignment
Special polar alignment routines if you can't see the North Star
Equipped with Go2Nova® 8409 controller boasting advanced GOTONOVA® tech
ST-4 autoguiding port integrated
Built-in Wi-Fi and USB port for firmware updates and computer control
Comes with a 7.5kg LiteRoc heavy-duty stainless steel tripod
Die-cast metal tripod spreader with accessory tray
Aluminum carrying case included
Optional 32-channel GPS and optional iGuider™ autoguiding system (#3360)

So there you have it. The GEM28 is packed to the gills with features and functionality, setting a new standard in the world of compact German equatorial goto mounts.

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) **	<±12 arcsec
PEC	Yes, Permanent PEC
Worm period	600 sec
Right Ascension worm wheel	Φ88mm, 144 teeth aluminum
Declination worm wheel	Φ88mm, 144 teeth aluminum
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	AccuAlign ^TM optical 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 requirement	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	LiteRoc heavy-duty stainless steel tripod (7.5kg)
Dovetail saddle	3.8" Vixen-style, center adjustable
Carrying case	Included
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

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iOptron GEM28 in Hard Case w/ LiteRoc Tripod

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