SKU: 7620ECA

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  • $3,391.00
  • Regular price $3,768.00

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Based on the new CEM40, the GEM45 uses most of the same components, repurposed into a traditional GEM design. The weight capacity has been increased from 40 to 45 lbs, and the GEM45 includes a new, refined 1.75" tripod. 
  • Max payload 45 lbs
  • Mount head weight 17.5 lbs
  • Precision stepper motors
  • Integrated iPolar Electronic pole finder
  • Large and easy to use Quick-lock clutches
  • PPEC
  • Go2Nova 8407+ Controller with built-in heater
  • Built-in 32-channel GPS
  • Integrated ST-4 Auto-guide port
  • Self-centering saddle accepts Vixen or Losmandy style dovetails
  • New LiteRoc 1.75" Tripod with improved stability and leg locks


Mount German Equatorial Mount
Max payload* 45 lbs (20 kg), exclude counterweight
Mount weight 17.5 lbs (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 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 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® 8407+, 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
WiFi External (optional)
Cable Management DC12V (3A), ST4,USB
Tripod 1.75" Stainless Steel(~8kg), or optional Tri-pier
Hard case Included
Operation temperature -10ºC ~ 40ºC
Warranty Two year limited


  • GEM45 Mount Head
  • Hard Case
  • iPolar Electronic Polar Scope
  • GPS Module
  • Counterweight shaft
  • AC Adapter
  • Go2Nova 8407 Hand Controller with cord
  • 11 lbs counterweight x 1 (with Tripod configuration)
  • Tripod with 1.75" diameter legs (with Tripod configuration)