The Telescope Authority
Since 1947

View Shopping Cart

Your Cart is Empty

iOptron GEM45 Mount Head in Hard Case

SKU : IO-7620A-HC

- Read
  • Free Shipping

  • More on the Way in 14 - 28 Days

Add to Wishlist

Got questions? Click for live chat

  • A German Equatorial Mount
  • Includes a fitted Hard Case
  • For both Visual Observations and Astroimaging
  • Easy Quick-lock Gear Clutches
  • Integrated iPolar Electronic Polar Finder
  • Low PEC, uses PPEC
  • Precision Stepper Motor
  • 32-Channel GPS


Product Details

  • The Innovative ideas applied to a time tested design make the iOptron GEM45 next-generation German equatorial mounts exactly what you need.

    This sharp looking CNC body tells you the GEM45 is a top-quality mount in both form and function. While utilizing their experiences gained during the development of this CEM series, iOptron designers were able to remove unnecessary bulk giving the GEM45 an incredible 2.8 payload to mount weight ratio. This compact 15.8-pound mount can precisely GOTO an object and track with up to 45-pounds of gear onboard. With its integrated electronic polar scope (iPolar), polar alignment is a snap, even when the pole star is obscured. Large levers on the quick-lock drive engagement system make it easy to snap its drive gears into place even when wearing gloves. There is little chance of your cables getting snagged with the GEM45's internal advanced cable management system. A new, patent-pending Universal Self-Centering Saddle (USCS) accommodates Losmandy and Vixen-style dovetail plates. The GEM45 mounts utilize reliable stepper motor drive systems with iOptron's low power consumption technology.

    A 212,000+ object library with star identification, GPS, Wi-Fi (requires optional iStarFi adapter) are a few of the desirable features standard on a GEM45 mount.

    iPolar is included.

    Major Features:

    • German equatorial mount with innovative features
    • Idea for both visual observation and astrophotography
    • Maximum payload of 45-pounds (20 kg) with the mount weight of only 15.8-pounds (7.2 kg)
    • Easy to use quick-lock gear clutches
    • Integrated iPolar electronic polar finder
    • Low periodic error (< ± 7 arc seconds)
    • Permanent periodic error correction (PPEC)
    • Precision stepper motor for precise GOTO and accurate tracking
    • Go2Nova 8407+ controller with Advanced GOTONOVA, GOTO Technology and built-in heater
    • Integrated ST-4 autoguiding port
    • 32-channel Global Positioning System (GPS)
    • USB communication port
    • Cable management system
    • New, patent-pending iOptron universal saddle
    • All metal, CNC machined with red/black anodized


    Tripod and counterweight are not included.

    Their optional new LiteRoc 1.75-inch tripod delivers rock solid stability in a lighter, more compact package.

  • specifications

    Free ShippingYes
    Head DesignEquatorial
    Instrument Capacity45 lb
    Mount Head Weight15.8lb
    Telescope ConnectionDual Vixen & Losmandy
    Tracking Accuracy<±7 arcsec
    Warranty2 Year Limited Warranty
  • included items

    • iOptron GEM45 mount (#7620A, with black gear switches)
    • Go2Nova 8407 Hand Controller
    • Stainless steel counterweight shaft
    • Internal iPolar electronic polar scope
    • GEM45 GPS module
    • AC adapter (100V-240V)
    • 2x coiled control Cable (6P6C RJ11 to RJ11, straight wired)
    • Serial cable (RS232 to RJ9)
    • USB cable
    • Hard case
    • Quick Start Guide

    Technical Specifications:

    Mount German Equatorial Mount
    Max payload* 45 lbs (20 kg), exclude counterweight
    Mount weight 15.8 lb (7.2 kg)
    Payload/Mount weight 2.78
    Structure Material All metal, CNC machined
    Exterior Finish Anodized red/black
    Latitude adjustment range 14º ~ 68º
    Azimuth adjustment range ± 6º
    Tracking accuracy (PE)** <±7 arcsec
    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 Not included
    Motor Precision stepper motor, 1.8º/128X micro-step
    Motor resolution 0.08 arcsec (200 PPS)
    Transmission Synchronous belt
    Hand Controller Go2Nova® 8407+, 8 line 21 character LCD
    Star Database 212,000+, star identification
    Power DC 12V, 5A
    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 iOptron Universal Saddle, 5"
    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 Not included
    Hard case Yes
    Operation temperature -10ºC ~ 40ºC
    Warranty Two year limited

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

Product Reviews