Micron-level positioning accuracy ensures sharp, detailed images for astrophotography
High load capacity up to 5 kg supports heavy telescope accessories and equipment
Universal USB Type-C interface allows direct power and communication, reducing cable clutter
Supports both ASKo and INDi protocols for broad compatibility with third-party software
Optional hand controller with manual focus buttons provides flexible, vibration-free operation
Summarized by Shop
Handles imaging payloads up to 11 lbs (5kg)
High-precision stepper motor with 128:1 gear ratio
Single USB-C port for power and data
ASCOM, INDI, and ASIAIR compatible
All-metal, red anodized housing weighing 0.47 lbs
Description
FAQ
Specifications
In the Box
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ZWO Electronic Automatic Focuser (EAFN)
The ZWO EAFN
Dimensions
41 x 52 x 70.3 mm
Weight
215 g
Load Capacity
5 kg
Motor
Custom stepper motor, 7.5° step angle, 1:128 reduction ratio
Power Supply
USB Type-C 5V 500 mA (EAFN), USB Type-C 5V 500 mA with built-in battery (EAFN Pro)
Communication
USB Type-C, Bluetooth (EAFN Pro)
Hand Controller Interface
Not included
Summarized by Shop
5.0
5 ratings
5
4
3
2
1
Avis
Ce n'est pas mon premier focuseur automatique, mais, mon 4 ième et toujours satisfait. La seule chose qui me dérange est le câble USB trop long pour l'usage.
A
Avis · July 28, 2026
Easy install on Svbony Sv503 80ED
Simple 15 minute install. Tested and works great.
S
Sebastian · August 26, 2026
Excellent produit et conforme aux spécifications
Excellent service. J’ai reçu rapidement des réponses à mes questions lors de l’installation. Il y a un petit kit pour installation sur un télescope réfractaire. Bien apprécié! Facile à installer. Et fonctionnel.