Description:
The ZWO AM3N Harmonic Equatorial Mount is a compact, high-precision astronomical mount designed for astrophotography and visual observation.
It uses harmonic (strain wave) drive technology, allowing high payload capacity in a lightweight, portable body.
The mount supports both Equatorial (EQ) and Alt-Azimuth (Alt-Az) modes, making it flexible for different observing needs.
Mechanical & Drive System
Mount Type: German Equatorial Mount (GEM)
Operating Modes:
Equatorial Mode (for long-exposure astrophotography)
Alt-Azimuth Mode (for visual observing)
Drive System: Harmonic (Strain Wave) Gear + Synchronous Belt
Gear Reduction Ratio: ~300:1
Periodic Error: ≤ ±15 arcseconds
PE Period: ~288 seconds
Harmonic drive technology ensures smooth tracking, minimal backlash, and high precision in a very compact design.
Payload & Portability
Mount Head Weight: ~4.1 kg (9.04 lbs)
Maximum Payload Capacity:
8 kg (17.6 lbs) without counterweight
13 kg (28.7 lbs) with counterweight
Counterweight Support:
Counterweight up to ~5 kg
Counterweight bar length ~25 cm
Movement & Adjustment
Latitude Adjustment Range: 0° – 90°
Azimuth Adjustment Range: ±6°
Maximum Slewing Speed: ~6°/second
Position Resolution: ~0.17 arcseconds
Connectivity & Control
Power Input: DC 12V (recommended ≥ 3A)
Control Interfaces: Wi-Fi; Bluetooth; USB
Software Compatibility:
ASIAIR; ASCOM; INDI
Mobile App Features: GOTO
Live Preview; Object database; Tonight’s Best Targets
Full wireless control from smartphone, tablet, or computer.
Additional Features
Dual Saddle Support: Vixen; Losmandy; Integrated Cable Management:
USB Type-C and DC ports positioned to reduce cable clutter
Status Indicator LED: Displays current mount mode and system status
Operating Temperature Range: -20°C to +40°C
Summary
The ZWO AM3N Harmonic Equatorial Mount is an excellent choice for:
Portable astrophotography
Small to medium telescopes
Users who want counterweight-free operation
Fast setup and wireless control
High precision in a lightweight mount
