ZWO AM5N strain-wave equatorial/alt-az mount, 15 kg payload without counterweight (20 kg with), 5.5 kg mount head.
The AM5N is the improved edition of ZWO's popular AM5 strain-wave (harmonic) mount. At 5.5 kg it carries 15 kg without a counterweight (20 kg with one, at a 25 cm lever arm), with better precision, better low-temperature behaviour and internal cable management.
A strain-wave gear with a synchronous belt (300:1) gives high torque with no meridian-flip balancing worries and, in most setups, no counterweight. It works in equatorial or alt-azimuth mode, has a power-off brake on the RA axis and a mechanical zero position, and is controlled by ASIAIR, the included hand controller, or a PC over USB, Wi-Fi or Bluetooth. Every mount ships with its own periodic-error test report.
Specifications
Mount type
Strain-wave gear mount
Modes
Equatorial / alt-azimuth
Drive
Stepper motor + synchronous belt + size-17 strain-wave gear, 300:1
Payload
15 kg without counterweight; 20 kg with counterweight (at 25 cm)
Mount weight
5.5 kg
Periodic error
< ±10″ (288 s period)
Resolution
0.17″
Max slew speed
6°/s
Latitude range
0–90°
Azimuth adjustment
±6°
Saddle
Losmandy and Vixen
Counterweight bar thread
M12 × 1.75
Power
12 V DC, at least 3 A, 5.5 × 2.1 mm centre positive
Power consumption
Standby 12 V/0.4 A; tracking 12 V/0.7 A; GoTo 12 V/0.9 A (1.7 A heavy-load mode)
Guide port
ST4
Connectivity
USB, Wi-Fi, Bluetooth
Brake
Power-off brake on RA axis
Operating temperature
−20 to 40 °C
In the box
Mount, hand controller with 2 m cable, 2 m USB-B and 1 m USB-C cables, PE test report, quick guide, M6 hex key
