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Description
iOptron GEM45G Equatorial GoTo Mount with iGuider & TripodDescription Innovative ideas applied to a time tested design, the iOptron GEM45 next generation German equatorial mounts. A sharp looking CNC body is the first indicator the GEM45 is a top quality mount in both form and function. Utilizing experiences gained during development of the CEM series, iOptron were able to remove unnecessary bulk giving the GEM45 an incredible 2. 8 payload to mount weight ratio. This compact 15. 8lb mount can precisely GOTO
Description
Innovative ideas applied to a time tested design, the iOptron® GEM45 next generation German equatorial mounts. A sharp looking CNC body is the first indicator the GEM45 is a top quality mount in both form and function.
- Utilizing experiences gained during development of the CEM series, iOptron were able to remove unnecessary bulk giving the GEM45 an incredible 2.8 payload to mount weight ratio. This compact 15.8lb mount can precisely GOTO an object and track with up to 45lbs 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.
- GEM45 mounts utilize reliable stepper motor drive systems with low power consumption technology.
- A 212,000+ object library with star identification, GPS, optional Wi-Fi (requires iStarFi adapter) are a few of the desirable features standard on a GEM45 mount.
The mount comes with the LiteRoc 1.75" tripod delivers rock solid stability in a lighter, more compact package. It also has improved leg cuffs and sockets for more rigidity and redesigned leg lock levers.
Specifications
Capacity |
|
| Max. additional load capacity (kg) | 20 |
| Counterweight(s) (piece) | 1 (5kg) |
| Interfaces | USB |
| Language | English |
| Polar elevation setting (°) | 14 - 68 |
| Mounting saddle | Losmandy & Vixen |
| DEC ball bearings diameter (mm) | 68 |
| RA ball bearings diameter (mm) | 68 |
| DEC worm gear diameter (mm) | 110 |
| RA worm gear diameter (mm) | 110 |
| Worm gear teeth (DEC) (piece) | 216 |
| Worm gear teeth (RA) (piece) | 216 |
| DEC worm shaft diameter (mm) | 17 |
| RA worm shaft diameter (mm) | 17 |
| RA axis diameter (mm) | 45 |
| DEC axis diameter (mm) | 45 |
| Diameter of counterweight bar (mm) | 28 |
| Long counterweight rod (mm) | 280 |
| Weight mount head only (kg) | 7,2 |
| Slow-motion azimuth adjustment | +/- 6 |
| Input voltage | 12 |
| Amperage (A) | 5 |
| Stepper motors | 1.8°/128 micro-steps |
| Cable-guide | internal |
Special features |
|
| GoTo system | yes |
| Handcontroller | yes |
| Level | yes |
Equipment |
|
| Tripod <p> | Tripod |
| Carrying case | yes |
| Pole finder | yes |
| Power pack | yes |
Tripod |
|
| Tripod leg diameter (mm) | 45 |
| Tripod material | Steel |
General |
|
| Series | GEM |
| Type | Mount |
| Type of build | Equatorial |
GoTo control |
|
| Precision | +/- 7 |
| GPS | yes |
| WIFI | optional |
| PEC correction | yes |
| Polar Alignment | iPolar |
| GoTo Language | English |
| Software | Go2Nova 8407 |
| Autoguiding | iGuider |
| Interfaces | Autoguider, USB |
| Database | 212.000 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Perfectly fits what I needed for my espresso habit!
Color: Black&Silver
This Maestri House mini coffee scale is a great little tool for espresso and pour-over. The size is compact enough to fit under a portafilter or cup, and the 0.1g accuracy makes dialing in coffee much easier. I like the built-in timer, rechargeable USB-C battery, and clean black-and-silver look. It feels precise, practical, and easy to keep near the espresso machine. Great value for anyone who wants more consistent coffee.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Maestro House Mini Coffee Scale
I have begun to drink tea, pu’erh tea to be specific. I have several varieties and I have had a problem with getting consistent results. The varieties can be very different in size depending on when the leaves are harvested (leaves harvested in spring are much smaller). So the easiest way to get consistent results is by weight. This scale is very easy to use with a ceramic tea scoop, set the tea scoop on the scale, zero it out and add tea leaves. This has made my results much better, without the wild swings in strength I had been getting before trying to eyeball even measures. This scale gives me accurate measurements to one tenth of a gram.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 4
Mostly great, except one little annoyance
Color: Black&Silver, Color: Black&Silver
Pros- lightweight, small, very accurate, easy to clean, timer included.
Cons- I use this to brew espresso on my Breville Touch and to get an accurate reading, you have to place something flat (structured) under the scale. Otherwise the reading just jumps all over the place. I know lot of espresso machines have the same base, so this might be an issue for some!
This is my reason for 4/5 stars. It’s an easy fix, it’s just kind of annoying. Value for the price seems to be on point. It’s easy to clean. It has a timer as well as scale (nice for espresso). Buttons work the first time you push them.
That’s it that’s all
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
★★★★★ 5
Good Value
Color: Black
Good quality SS cup. Not much else to say.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
★★★★★ 5
Absolutely fantastic
Color: Black, Color: Black
Absolutely solid product and would recommend this to anybody as a wide mouth espresso measuring cup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
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