ZWO EFW Electronic Filter Wheel (7x2")

ZWO EFW Electronic Filter Wheel for 7 x 2" filters. With this EFW, you can change filters electronically via USB. Also suitable for unmounted 50 mm filters.

• The filter wheel body is CNC milled from an aircraft graded aluminum block.
• Excellent craftsmanship, very thin and lightweight with only 20mm thickness.
• The core part of ZWO's EFW is the stepper motor which has reliable performance and quality that comes from NPM, Japan.
• There is no need of multiple cables to power this wheel up, just one USB cable does the trick.The maximum power supply of this EFW is approximately 120mAh @ 5V, which can be operated from the Cooled CCD’s USB2.0 port.

Since 2023, ZWO included a filter darkening mask set for EFW 7x2".

Specifications of the darkening sets(4pcs):
External diameter: 88mm. Inner diameter: 55mm (2pcs) & 58mm (2pcs). Thickness: ≤0.2. 4pcs in total.

Delivery

ZWO EFW 
USB2.0 – 2m cable
A bag of M2.5*6 screws (6pcs/ bag)
A bag of filter masks for 50mm filters (7pcs/ bag)
Phillips screwdriver
A bag of M2*4 flat screws (23pcs/ bag)
M54M-M48F adapter
M54M-M42F adapter