ZWO Compact Filter Wheel EFW 2 inch

ZWO Compact Filter Wheel EFW 2 inch: five 2-inch positions for full-frame mono

This compact EFW wheel brings automatic filter changes to full-frame mono cameras like the ASI6200MM Pro. Five positions for 2-inch or 50.4 mm unmounted filters cover standard workflows: LRGB plus a narrowband filter, or the SHO trio with luminance and a spare.

Despite the large filter size, the wheel is only 20 mm thick, keeping the optical train short and rigid. The NPM stepper motor switches silently and precisely; power supply and control run via USB without an external adapter.

Large glass, no shadow

On full-frame sensors, 2 inch is the only filter size without vignetting. This wheel positions each filter repeatably and exactly in front of the sensor, so flats remain reliable across the entire project.

The CNC-machined aluminum housing weighs approximately 500 to 650 grams.

In the ecosystem

Fully integrated with ASI cameras, ASIAIR, and capture software like N.I.N.A.: filter changes are included in the fully automated imaging plan, night after night.

Anyone who needs seven positions for LRGB and fully narrowband chooses the larger EFW 7×2 inch.

Featured accessories

• ZWO LRGB filter set 2 inch: four positions filled
• ZWO 2-inch Narrowband Filter Set: Full-Frame Optimized
• ZWO ASIAIR Plus: automatic filters in the imaging plan

For whom yes, for whom no

Hello full-frame monochrome photographers with a workflow of a maximum of five filters.

Not Anyone who wants to load LRGB and full SHO at the same time; that is what the 7×2 inch version is made for.

Specifications

This compact 2-inch wheel makes the full-frame filter sets of ZWO fully automatically deployable.