ZWO 7x 50mm Square Filter Wheel
ZWO 7x 50mm Square Filter WheelZWO 7x 50mm Square Filter WheelZWO 7x 50mm Square Filter Wheel

ZWO 7x 50mm Square Filter Wheel

£599.00✓ 2 year warranty


2x in stock shipped 1-2 working days

About this product

Model:  zwo_efw_square
Part Number:  ZWO EFW-7x50

ZWO 7x 50mm Square Filter Wheel

The new ZWO 7x 50mm Square EFW is designed for use with 50mm Square Filters and large format cameras. It has been designed for use with the ZWO ASI461MM Pro Camera.

This Filter Wheel is milled from an aircraft-grade aluminium block and features a high-quality stepper motor from NPM in Japan, providing high precision and reliability.

It can be rotated both clockwise and counterclockwise for filter selection.


  • Power supply method: USB 2.0
  • Control method: ASCOM and SDK
  • Driver: Free of driver
  • Module: 7 positions, 50mm*50mm
  • Weight: 1kg

Also, it can be directly connected to the USB 2.0 ports of the ASI-cooled cameras.

Requirements for Filters

Square, 50x50x3mm (thickness supported: 3~4mm). 


What's in the box

  • EFW
  • 0x75mm cross screwdriver
  • 2m USB 2.0 right-angle cable
  • 0.5m USB 2.0 right-angle cable
  • 50mm*50mm filter masks (10pcs)
  • Darkening rings set
  • M2.5*6 screws (12pcs)
  • M3*8 screws(6pcs)
  • M2*4 screws (26pcs*2bags)

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