ZWO AM7 Harmonic Equatorial Mount
- High Load Capacity up to 30kg
- Periodic Error of +/-10 Arc Seconds (Measured Per Unit)
- Ultra-low Temperature Operation down to -20°C
- Integrated Cable Management
- Bluetooth, Wi-Fi, and Hand Controller Support
The ZWO AM7 Harmonic Equatorial Mount is ZWO’s highest-capacity harmonic drive mount, engineered for heavier imaging systems and long focal length astrophotography where tracking accuracy and mechanical stability are critical.
Without counterweight: 20kg
With counterweight: 30kg
Designed to support larger optical tubes, long focal length refractors, and fully equipped imaging trains.
Integrated USB Type-C and DC power ports on the dovetail saddle allow power and data to be routed cleanly through the mount, reducing cable drag and improving reliability during long tracking sessions.
Custom harmonic drive system with periodic error controlled within ±10 arcseconds
300:1 reduction ratio provides high torque output and smooth, consistent tracking
Each AM7 includes an individual periodic error test report for verification.
Supports Wi-Fi, Bluetooth, and the included smart hand controller for flexible operation.
Compatible with Sky Atlas and ASIAIR for GoTo, object databases, live star maps, and firmware updates.
Operates as both an Equatorial Mount for imaging and an Alt-Azimuth Mount for visual observing, with a full altitude adjustment range of 0–90°.
Mount weight: approximately 6.5–6.75kg, balancing portability with the strength required for heavier payloads.
Rated for reliable operation down to -20°C, ensuring consistent performance during winter imaging sessions.
Integrated RA-axis brake prevents uncontrolled movement in the event of power loss, protecting mounted equipment.
Purpose-built for astrophotography applications, delivering:
Primary adjustment range of 0–60° using the altitude adjustment knob
Secondary adjustment up to 90° enabled by repositioning the hex-head screw
Higher Payload Capacity: Designed for heavier and longer optical systems
Verified Precision: Individual periodic error testing included
Cleaner Setup: Integrated power and data routing
Scalable Platform: A mount you can grow into as your equipment evolves
| Mount type | German Equatorial Mount |
| Mount mode | Equatorial/Alt-Azimuth |
| Drive | Custom Harmonic Drive (300:1 reduction ratio) |
| Periodic error | <±10" |
| Payload | 20kg (without counterweight), 30kg (with counterweight) |
| Mount weight | Approx. 6.5–6.75kg |
| Latitude adjustment range | 0°-90° |
| Dovetail saddle | Losmandy & Vixen |
| Communication | USB/Wi-Fi/Bluetooth |
| Operating | -20°C-40°C |
| Power-off brake | RA axis |
| Cable Management | Support |
Foam packaging box
× 1
Equatorial mount unit
× 1
2-meter USB 2.0 cable (Type-B to type-A)
× 1
AM7 periodic error test report
× 1
Quick guide
× 1
Hand controller
× 1
2-meter hand pad connection cable
× 1
1-meter USB 2.0 cable (Type-C to Type-A)
× 1
M6 hex key (included within the unit)
× 1