Why Purchase from All-Star Telescope?
Free Expert Support
Whether you are a first timer needing help with setting up or an enthusiast that can't quite make that one thing work, our expert staff are ready to support your needs. With decades of knowledge and first hand experience we've been there and we can help you through it!
Stress Free, Secure Transactions
You can trust purchasing and delivery with All-Star Telescope. All of our transactions are 100% secure and Level 1 PCI DSS compliant thanks to Shopify's ShopPay platform. For additional protection, we insure 100% of the value of every shipment we make. If it get's lost during shipment, we replace it. If it gets damaged during shipment, we repalce it. We make sure your product arrives exactly as you would expect it to; we promise.
We also ensure privacy protection. We never keep any of your credit card information on file and any of your personal data is stored accordign to our policies.
30 Day Return Policy
Buy with confidence knowing that we accept returns up to 30 days after purchase. We want you to have something you will actually use and we are confident that we keep good quality products in our store with No Junk.
Price Match Promise
Shipping around for the best price is tough, we make it easier by offering the best pricing in the market. But if you find a better price on an in-store item somewhere else we will match it!
Product Description
Introducing iOptron’s new compact next-generation German equatorial mounts the GEM28EC!
Like their predecessors, the GEM28 is designed with portability in mind, weighing in at only 10 lbs it can support up to a 28lb payload an incredible 2.8 mount weight to payload ratio. We achieved this using design methods developed to reduce mount mass in our CEM family of mounts. The German EQ versions were created to satisfy consumer that prefer a more traditional mount and to function at higher latitudes.
Building on the legacy of earlier GEM models we have added features for convenience and functionality. A positive lock gear engagement system (easy to use even when wearing gloves). A high resolution optical encoder with real-time PEC delivers accurate tracking with PE <0.3 arcsec RMS. Built-in Wi-Fi enabling unparallel connectivity. The GEM28EC sets the new standard for compact German equatorial goto mounts.
The GEM28EC is equipped with the latest advanced GOTONOVA® GOTO technology, making it one of the most powerful and accurate GOTO mounts available. The 212,000 object library ensures you’ll never run out of targets to see or image. The Go2Nova® Hand Controller is intuitive to use and its large 4-line LCD screen simplifies the process of setting telescopes and locating objects.
The GEM28EC mount has an integrated electronic polar finder scope known as the iPolar. This tool ensures the accurate alignment of a telescope, even when the pole star is obscured. It comes with a LiteRoc heavy duty stainless steel tripod and an aluminum carrying case.
Specifications
| Mount | German Equatorial Mount |
| Payload * | 28 lbs (12.7kg), exclude counterweight |
| Mount weight | 10 lbs (4.5kg) |
| Payload/Mount weight | 2.80 |
| Structure Material | All metal, Casting + CNC machined |
| Exterior Finish | Powder coating |
| Periodic error (PE) ** | < 0.3 arcsec rms |
| PEC | Real-time PEC |
| Worm period | 600 sec |
| Right Ascension worm wheel | Φ88mm, 144 teeth aluminum |
| Declination worm wheel | Φ88mm, 144 teeth aluminum |
| Right Ascension axis shaft | Φ35mm steel |
| Declination axis shaft | Φ35mm steel |
| Right Ascension bearing | Φ55mm ball bearing |
| Declination bearing | Φ55mm ball bearing |
| Worm gears | Φ15.2mm, Brass |
| Motor drive | 1.8° stepper motor, 128X microdivision |
| Resolution | 0.17 arc seconds |
| Transmission | Synchronous belt |
| Latitude adjustment range | 10° ~ 70° |
| Azimuth adjustment range | ± 6° |
| Polar Scope | iPolarTM electronic polar scope |
| Level indicator | Level bubble |
| Hand Controller | Go2Nova® 8409 with ~212,000 objects database |
| Tracking | Automatic |
| Slew speed | 1×,2×,8×,16×,64×,128×,256×,512×,MAX(6º/sec) |
| Power consumption | 0.6A(Tracking), 0.9A(GOTO) |
| Power requirement | 12V DC, 5A |
| AC adapter | 100V ~ 240V (included) |
| Power-down memory | Yes |
| Wi-Fi | Built-in |
| Communication port | Yes (Wi-Fi and USB) |
| Autoguide port | Yes (ST-4 compatible) |
| Firmware upgrade | Yes |
| PC computer control | Yes (ASCOM) |
| Counterweight shaft | Φ20X200mm (M16), Stainless Steel |
| Shaft extension | Φ20X120mm (M16), Stainless Steel |
| Counterweight | 10 lbs (4.5kg) |
| Tripod | LiteRoc heavy-duty stainless steel tripod w/ vibration suppression pads (7.5kg) |
| Dovetail saddle | 3.8" Vixen-style, center adjustable |
| Carrying case | Included |
| GPS | Optional external 32-channel GPS |
| Autoguiding | Optional external iGuider 1 |
| Operation temperature | -10°C ~ 40°C |
| Warranty | Two year limited |
* OTA size and length dependent, smaller than 6" in diameter recommended
** Measured with encoder on bench, 10 minutes