ZWO EFW 7×2 Inch Filter Wheel for ASI Mono Cameras (kopie) (kopie) (kopie) (kopie) (kopie)

The ZWO EFW 7×2 inch filter wheel is a precision instrument for astrophotographers working with mono cameras “like the ASI 6200MM Pro. With space for seven 2-inch filters, this filter wheel offers maximum flexibility for complex imaging sequence” s such as LRGB, Ha, OIII, and SII — all without manual switching.

Key benefits
✓ Space for seven 2-inch filters – ideal for LRGB + narrowband workflows
✓ No vignetting, even with full-frame sensors and fast optics
✓ Only 20 mm thick – compact and light (approx. 650 grams)
✓ Silent, precise NPM stepper motor
✓ Low power consumption via USB – no external power needed
✓ Suitable for both mounted 2-inch and 50.4 mm unmounted filters

What makes this filter wheel special
With seven positions for 2-inch filters (or 50.4 mm unmounted), this filter wheel is perfect for those wanting to use a complete set of color and line filters without compromise. Think LRGB combined with Ha, OIII, and SII for full narrowband coverage. The compact design of just 20 mm thick makes this possible without unnecessarily extending your optical train.

The built-in stepper motor from Japanese manufacturer NPM ensures silent, extremely precise filter changes. This prevents alignment issues and keeps your filters exactly in position. Everything is controlled via a single USB cable — no additional power supplies or separate boxes needed.

Compatibility and connections
The wheel seamlessly connects to mono cameras like the ZWO ASI 6200MM Pro, with internal threads for M54, M48, and T2. This allows easy integration into virtually any setup. Thanks to the large internal filter format, there’s no vignetting, even when used with full-frame sensors or telescopes with a fast focal ratio.

Mounting and delivery
The filter wheel can be screwed directly onto the camera. ZWO provides a clear manual with mounting instructions. You’ll receive everything you need:

– USB cable
– Filter masks
– Thread adapters
– Mounting screws
– Screwdriver

Technical specifications (practically translated)
Number of filters: 7 x 2 inch mounted or 50.4 mm unmounted
Housing thickness: 20 mm
Weight: approx. 650 grams
Material: CNC-milled aluminum
Motor: NPM stepper motor
Power: USB 2.0 (low power consumption)
Telescope side connections: M54x0.75 / M48x0.75 / T2 (internal)
Suitable for: ASI 6200MM Pro and similar ZWO mono cameras

Practical application
Ideal for serious astrophotographers who want to switch between multiple filter sets in one session without interruption. Perfect for narrowband imaging, LRGB projects, or multispectral photometry. Seamlessly combines with ZWO “’s cameras”, ASIAIR, and OAG modules.