The iOptron GEM45 is a next-gen German equatorial mount that pairs cutting-edge features with a tried-and-true design. Its sleek CNC-machined body is your first clue that this mount means business, both aesthetically and functionally.

Drawing insights from the development of our CEM series, we've shed the unnecessary weight, achieving an impressive 2.5 payload-to-mount weight ratio. This allows the GEM45 to handle up to 45lbs of equipment, while itself weighing just 17.5lbs. Polar alignment is hassle-free, thanks to the built-in iPolar electronic polar scope—even when Polaris is out of sight. Quick-lock levers make gear engagement a breeze, gloves or no gloves, and the advanced internal cable management minimizes the risk of cable snags. It even sports a 6-inch dual dovetail saddle that's compatible with both Losmandy and Vixen plates.

As for the tech, it's got a reliable stepper motor drive system and low power consumption. The new LiteRoc 1.75" tripod brings sturdy support without adding extra weight. And let's not forget its robust 212,000+ object library, star identification, and optional Wi-Fi connectivity (via the iStarFi adapter).

Features:

German equatorial mount enhanced with modern upgrades
Suited for both stargazing and astrophotography
Max payload: 45lbs; Mount weight: 17.5lbs
Quick-lock gear clutches for easy setup
Built-in iPolar electronic polar scope for simplified alignment
Low periodic error (< ±7.5 arcsec)
Permanent Periodic Error Correction (PPEC)
High-precision stepper motor for accurate GOTO and tracking
Go2Nova controller featuring Advanced GOTONOVA GOTO Tech and an inbuilt heater
Integrated ST-4 autoguiding port
32-channel GPS system
USB port for communication
Cable management system integrated
6" dual dovetail saddle compatible with Losmandy-D & Vixen
All-metal construction, CNC machined, red/black anodized finish
Optional Wi-Fi connectivity via Smartphone/Tablet/Computer
LiteRoc 1.75" tripod with enhanced stability and leg locks
NEW iOptron-subsidized TheSky Imaging Edition

What's in the Box:

iOptron GEM45 mount (#7620A, featuring black gear switches)
Go2Nova Hand Controller
A single 11lb counterweight
Stainless steel counterweight shaft
Built-in iPolar electronic polar scope
GEM45 GPS module
Universal AC adapter (100V-240V)
Two coiled control cables (6P6C RJ11 to RJ11, straight wired)
USB cable
LiteRoc 1.75" tripod with upgraded stability and leg locks
Quick Start Guide

So, yeah, this mount is pretty much packed with everything you'd need for a night—or many nights—under the stars.

Specifications

Mount	German Equatorial Mount
Max payload*	45 lbs (20 kg), exclude counterweight
Mount weight	17.5 lb (7.9 kg)
Payload/Mount weight	2.53
Structure Material	All metal, CNC machined
Exterior Finish	Anodized red/black
Latitude adjustment range	14º ~ 68º
Azimuth adjustment range	± 6º
Tracking accuracy (PE)**	<±7.5 arcsec
PEC	PPEC
Period	400 sec
Worm diameter	Φ17mm, Brass
Right Ascension worm wheel	Φ110mm, 216 teeth, zero backlash
Declination worm wheel	Φ110mm, 216 teeth, zero backlash
Right Ascension axis shaft	Φ45mm steel
Declination axis shaft	Φ45mm steel
Right Ascension bearings	Φ68mm
Declination bearings	Φ68mm
Counterweight shaft	Φ28X280 mm, Stainless Steel (1.2 kg)
Counterweight	11lbs (5kg) X1
Motor	Precision stepper motor, 1.8º/128X micro-step
Motor resolution	0.08 arcsec (200 PPS)
Transmission	Synchronous belt
Hand Controller	Go2Nova® HC, 8 line 21 character LCD
Star Database	212,000+, star identification
Power	DC 12V, 5A (5.5mm/2.5mm plug)
AC adapter	100V ~ 240V (included)
Power consumption	0.6A(Tracking), 0.9A(GOTO)
Power-down memory	Yes
Polar scope	Internal iPolar ^TM electronic polar scope
Meridian treatment	Stop (0-20° pass), flip
Zero position	Automatic zero search
Dovetail saddle	6" Losmandy-D & Vixe dual saddle
Max slew speed	4.5°/sec (1080X)
Guiding port	ST-4
Communication port	USB
GPS	Yes
WiFi	External (optional)
Cable Management	DC12V (3A), ST4,USB
Tripod	1.75" Stainless Steel(~8kg), or optional Tri-pier
Hard case	Optional
Operation temperature	-10ºC ~ 40ºC
Warranty	Two year limited

* OTA size and length dependent
** Measured with encoder on the bench, 400 seconds

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iOptron GEM45

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