ZWO x William Optics Co-branded Limited Edition

Traditional equatorial mounts often require heavy counterweights, making it challenging to balance the right ascension (RA) and declination (DEC) axes. They are cumbersome to transport and store, causing significant inconvenience for amateur astrophotographers during outdoor sessions. Additionally, traditional strain wave gear mounts may face challenges in balancing portability, payload capacity, and long-term stability.

To address these challenges, ZWO developed the ASI Mount series, eliminating the need for counterweights in many imaging setups. Building upon the success of the AM3, the new AM3N introduces refined structural improvements, enhanced cable management, and optimized performance for a more efficient astrophotography experience.

The AM3N weighs only 4.1 kg and supports payloads ranging from 8 kg to 13 kg. While portability remains a core advantage, ZWO continues to prioritize stability and precision. The optimized internal structure incorporates harmonic drive reducers and timing belts, delivering smooth motion control with an impressive 300:1 reduction ratio. The mount supports both equatorial and alt-azimuth modes and can be controlled through Wi-Fi, Bluetooth, or mobile applications.

Key Features

Compact Design with Enhanced Stability
The AM3N combines portability with reliable performance through its optimized internal structure, featuring harmonic drive reducers and synchronous belts for smooth motion control and a precise 300:1 reduction ratio.
Compared with the previous AM3, the AM3N introduces an upgraded dovetail saddle with integrated Type-C and 12V DC power ports, providing cleaner cable management and a more efficient astrophotography setup.

Custom Strain Wave Gears for Precision Tracking
Designed specifically for astrophotography, the custom strain wave gear system delivers high torque, smooth operation, and extremely low periodic error.
Each AM3N is individually tested and supplied with a dedicated PE curve report. The periodic error is consistently maintained within ±15 arcseconds, ensuring reliable tracking performance for long-exposure imaging.

Lightweight Design with 8 kg to 13 kg Payload Capacity
Weighing only 4.1 kg, the AM3N provides an excellent balance between portability and load capacity.
Without Counterweights: Supports up to 8 kg.
With Counterweights: Supports up to 13 kg.

Dual Modes: Equatorial and Alt-Azimuth
The AM3N can operate in both equatorial and alt-azimuth modes, offering flexibility for different astronomical applications.
Equatorial Mode: Ideal for tracking and imaging celestial objects.
Alt-Azimuth Mode: Best suited for visual astronomy.
Modes can be switched easily through the ASI Mount App or handheld controller.

Full 0°–90° Altitude Adjustment
The AM3N supports a wide 0°–90° altitude adjustment range, allowing operation across different geographic locations.
Gear 1: Adjust the handle to set angles between 0° and 60°.
Gear 2: Loosen the hex screws to adjust the clamp for angles between 30° and 90°.

Wireless Control and Smart Mobile Operation
Built-in Wi-Fi and Bluetooth allow direct control through mobile devices without requiring complex wiring.
Through the ASI Mount App, users can access GOTO, Tonight’s Target, Live Preview, and on-screen joystick control for a streamlined observing and imaging experience. The AM3N is also compatible with ASCOM, INDI, and other control platforms.

Seamless ASIAIR Integration
Fully integrated with the ZWO ecosystem, the AM3N works seamlessly with ASIAIR for wireless control of the mount, camera, guiding, and imaging workflow.
Together with ZWO accessories, the AM3N provides a cleaner and more efficient astrophotography experience.

Learn More on ZWO Product Page

ZWO x William Optics Co-branded Limited Edition

Traditional equatorial mounts often require heavy counterweights, making them cumbersome to transport and balance. The AM5N addresses these challenges with a compact, counterweight-free design, offering enhanced portability and stability for amateur astrophotographers. Its optimized internal structure incorporates harmonic drive reducers and timing belts, delivering precise control and a 300:1 reduction ratio. The mount operates in both equatorial and alt-azimuth modes and can be controlled via Wi-Fi, Bluetooth, or a handheld controller.

Key Features

Enhanced Portability and Stability
Weighing only 5.5 kg, the AM5N supports payloads up to 15 kg without counterweights and up to 20 kg with counterweights, maintaining a balance between portability and performance.

Custom Harmonic Drive System
The AM5N features a custom harmonic drive system with a synchronous belt, ensuring high torque, zero backlash, and low periodic error of ±10 arcseconds.

Integrated Cable Management
Internal cable routing through the DEC saddle allows for seamless power and control connections, reducing cable clutter and the risk of snags during operation.

Dual Mount Modes
Switch effortlessly between equatorial and alt-azimuth modes using the ASI Mount App or the included hand controller. A status LED indicates the current mode: red for equatorial and green for alt-azimuth.

Wide Latitude Adjustment
The mount offers a full 0°–90° latitude adjustment range, accommodating various observing locations and setups.

Wireless and Wired Control Options
Control the AM5N via Wi-Fi, Bluetooth, or USB-C connections. The mount is compatible with the ASIAIR system and supports ASCOM and INDI protocols for versatile operation.

Power Failure Protection
An RA axis brake system engages automatically during power failures, safeguarding your equipment from potential damage.

Seamless ASIAIR Integration
The AM5N integrates seamlessly with ZWO's ASIAIR system, providing an optimized astrophotography experience through wired or wireless connections.

Featuring durable Velcro straps for secure attachment, this pouch offers ample storage space to make your stargazing experience more convenient.

Make your ZWO AM3/5 tripod kit load-bearing and stable.

This Tripod Extrapadding Backpack is specifically designed for astro EQ mounts tripod, offering added support and protection for your equipment.

• Thickness: 22mm
• Size: approximately 20 × 20 × 67 cm, with a measurement tolerance of ±3 cm.

Featuring durable Velcro straps for secure attachment, this pouch offers ample storage space to make your wildlife observation experience more convenient.