iOptron Mount GEM28 AccuAlign 1.5" Tripod

In line with its predecessors, the GEM28 prioritizes portability, weighing a mere 10 lbs while supporting up to a 28lb payload, boasting an impressive 2.8 mount weight to payload ratio. This achievement draws from design methods honed in our CEM mount family, catering to those who prefer the traditional German EQ mount style, especially at higher latitudes.

Expanding on the foundation laid by earlier GEM models, we've integrated features for enhanced convenience and functionality. A positive lock gear engagement system ensures usability, even with gloves on, while built-in Wi-Fi offers unparalleled connectivity. Recordable permanent periodic error correction (PPEC) allows for optimal PEC training sessions to be replicated. In terms of performance, the GEM28 delivers precise pointing and accurate tracking, setting a new standard for compact German equatorial goto mounts.

Equipped with the latest advanced GOTONOVA® GOTO technology, the GEM28 stands as one of the most powerful and accurate GOTO mounts available. Its 212,000 object library ensures a vast array of targets for observation or imaging. The intuitive Go2Nova® Hand Controller, featuring a large 4-line LCD screen, simplifies telescope setup and object locating.

Key advantages summarized:

• German equatorial design with a latitude range of 10° to 70°.
• Ideal for both visual observation and astrophotography.
• Low periodic error (< ± 10 arc seconds).
• Payload of 12.7 kg (28 lbs) with a mount-only weight of 4.5 kg (10 lbs).
• CNC machined and cast metal body for durability.
• Spring-loaded gear system and large, easy-to-use quick-lock gear clutches.
• Stepper motor with low power consumption and belt transmission.
• AccuAlignTM calibrated polar scope with a polar alignment routine for non-Pole Star visibility.
• Integrated ST-4 autoguiding port and built-in WiFi for enhanced connectivity.
• USB port for firmware upgrades and computer control.
• Die-cast metal tripod spreader with accessory tray.
• Optional hard carrying case and 32-channel Global Positioning System (GPS).
• Optional iGuiderTM autoguiding system.

Specifications:

Capacity:

Designation: GEM

Max. Additional Load Capacity: 12.7 kg

Polar Elevation Setting: 10° - 70°

Motor Speeds: 1, 2, 8, 16, 64, 128, 256, 512

Position Precision: +/- 6

Precision of Tracking: 0.17

Material:

Worm Gear: Aluminium

Worm Wheel: Brass

Worm Gear Teeth (RA): 144 (Aluminium)

Counterweight(s): 1 (4.5 kg)

Material of Counterweights: Steel

Diameter of Counterweight Bar: 20 mm

Software:

Go2Nova

Display Screen: 2.17 x 0.8 inches (LCD display with backlight)

Database: 212,000

Connection: USB & ST-4 Cable

Interfaces:

ST-4, HBX, USB, DEC

Cable Guide: Internal

Operating Conditions:

Operating Temperature: -10° to +40° Celsius

Power Supply: 12V DC, 5A

Power Consumption in Open Circuit: 0.9 mA

Max. Tripod Height: 117 cm

Special Features:

Polar Axis Scale: Yes

Fitting for Prism Rail: Yes (Vixen)

PEC Correction: Yes (Permanent)

GoTo System: Yes

GPS (Optional): Yes

Controllable via PC: Yes

Updateable via Web: Yes

Accessory Tray: Yes

Equipment:

Transport Cases: No

Pole Finder: Yes

Power Pack: Yes

Cable: USB

Tripod:

Tripod Material: Stainless Steel

Tripod Weight: 5 kg

General:

Colour: Black-Red

Total Weight: 20 kg

Series: GEM

GoTo Control: WiFi

Alignment Method: 3-Star Alignment, 2-Star Alignment, 1-Star Alignment

Autoguiding: Yes

PEC Correction: Yes

Tracking Speeds: Sidereal, Solar, and Lunar

Polar Alignment: Easy Polar Alignment