ZWO EAFN Electronic Automatic Focuser

Micron-Level Precision

At the heart of the EAF lies a high-precision custom stepper motor with a 7.5° step angle and 1:128 reduction ratio, delivering micron-level positioning accuracy. Every movement is deliberate and exact, enabling pinpoint focusing essential for deep-sky and planetary imaging. Whether you're imaging galaxies or fine lunar detail, the EAF ensures optimal focus every time.

Compact yet High Load Capacity

Despite its compact form, the EAF boasts a high load capacity of 5kg (11.02 lbs) rigorously tested in ZWO’s labs. It can effortlessly handle heavy imaging trains, including filter wheels, OAGs, and cooled cameras, ensuring smooth, stable performance across all your equipment.

Upgraded to USB Type-C

The latest EAF now features a universal USB Type-C interface, replacing the older Type-B connector. This upgrade offers broader compatibility, more convenient power options, and simplified cable management. Power it directly through your camera, computer, or ASIAIR device for seamless integration into your setup.

Extensive Software Compatibility

The ZWO EAF supports a wide range of control software via ASCOM and INDI protocols, making it one of the most versatile focusers available. Compatible platforms include:

• ASIAIR app
• ASCOM
• ASIStudio
• NINA
• SharpCap
• FireCapture
• MaximDL
• Sequence Generator Pro
• and many more

Optional Hand Controller

Enhance your setup with the optional ZWO EAF Hand Controller, crafted from eco-friendly ABS material for a comfortable grip. With dedicated IN and OUT buttons, it allows smooth, manual focus adjustments without introducing unwanted vibrations, perfect for fine-tuning without a computer or mobile device.