ZWO Electronic Filter Wheel (2025 Edition)- 5x2"

Refined Design with Anti Light-Leak Protection

The next-generation ZWO EFW series introduces an upgraded, fully sealed designed to eliminate light leak and provide smoother, quieter, and more accurate filter rotation. The internal sealing structure, dual light-blocking protection, and fully enclosed motor housing deliver cleaner subframes — even during long, multi-hour integrations.

Whether you image in LRGB, SHO, or custom narrowband sets, these wheels offer the stability, durability, and precision needed for modern deep-sky workflows.

Overview of New Filter Wheels

Key Features

• Full Anti–Light-Leak System

• New USB-C Interface

• Lightweight & Rigid CNC-Machined Body

• High-Accuracy Stepper Motor

• Automated Filter Switching

• Single-Cable Operation

What's Included

ZWO EFW 2" (5-Slot)

• Filter Wheel Slots: 5 positions
• Effective Thickness: 20 mm
• Supported Filters: 2" mounted (≤ 7 mm) & 50 mm unmounted (1.5–3.5 mm)
• Weight: 540 g