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Qualifies for Free Ground Economy Shipping (CONUS Only)
Free iCam 462C planetary camera with the purchase of any CEM26/40, GEM28/40 mount & tripod. Offer valid through Nov 30th, 2025.
Send your request with product sales receipt to sales@ioptron.com or iOptron, 1 Merrill st., Woburn, MA 01801 if by mail. Make sure your address and telephone number is included. Mount must be purchased from an authorized US or Canadian iOptron dealer, offer ends November 30th 2025, allow 6 to 8 weeks for processing.
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 with a wider diameter counterweight bar, and the GEM45 offers a new and refined 1.75" tripod.
- Max payload 45 lbs
- Mount head weight 15.8 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 - weight = 15 lbs.
Specifications
|
Manufacture |
iOptron |
|
Model |
GEM45 |
|
Mount Type |
German Equatorial Mount (GEM) |
|
Payload (excl. CW) |
20.4 kg (45 lbs), exclude counterweight |
|
Mount Weight |
7.2 kg (15.8 lbs) |
|
Payload/Mount Weight |
2.8 |
|
Structure Material |
All metal, CNC machined |
|
Exterior Finish |
Anodized red/black |
|
Latitude Adjustment Range |
0～68° |
|
Azimuth Adjustment Range |
±6° |
|
Tracking Accuracy (PE) |
< ±7 arcsec / < 0.25 arcsec RMS (EC) |
|
Period |
400 sec |
|
Worm diameter |
17 mm |
|
Right Ascension Worm Wheel |
216 teeth, Ø110 mm, zero backlash |
|
Declination Worm Wheel |
216 teeth, Ø110 mm, zero backlash |
|
Right Ascension Axle |
Ø45 mm, steel |
|
Declination Axle |
Ø45 mm, steel |
|
Right Ascension Bearings |
Ø68 mm |
|
Declination Bearings |
Ø68 mm |
|
Counterweight Shaft |
Ø20 x 410 mm (SS, 1 kg) |
|
Counterweight |
5 kg (11 lbs) x1 (with tripod package only) |
|
Mounting Base Diameter |
Ø125mm |
|
Motor |
precision stepper motor, 1.8°/128 micor-step |
|
Motor Resolution |
0.08 arcsec (200 PPS) |
|
Hand Controller |
Go2Nova 8407+; 8 line 21 character LCD |
|
Star Database |
359,000+, star identification |
|
Power |
DC 12V, 5A |
|
Power Consumption |
0.6A (tracking), 0.9A (GOTO) |
|
Polar Scope |
Internal iPolar eletronic polar scope |
|
Meridian treatment |
Stop (0-10° pass), flip |
|
Zero position |
Automatic zero search |
|
Dovetail saddle |
iOptron Universal saddle, 5" |
|
Max slew speed |
4.5°/sec (1080x) |
|
PEC |
PPEC/Real time PEC (GEM45EC) |
|
Guiding Port |
ST-4 |
|
Communication Port |
USB |
|
GPS |
YES |
|
WIFI |
External (optional adapter) |
|
Cable Management |
DC12V (3A), ST4,USB |
|
Tripod |
1.75"/15 lbs. |
|
Hard case |
GEM45EC standard, GEM45 optional |
In The Box
All Configurations:
- GEM45 Mount Head
- Hard Case for Mount Head
- iPolar Electronic Polar Scope
- Counterweight shaft
- Go2Nova 8407 Hand Controller with cord
1.75" Tripod & Hard Case Also Includes:
- 11 lbs counterweight x 1
- Tripod with 1.75" diameter legs
NUC
The GEM45-NUC is ready to mate with Intel® NUC minicomputer (thickness≤38mm) at the front of dovetail saddle seamlessly with the cable management system.