ZWO EFWMini 5 Position Electronic Filter Wheel for 1.25 and 31mm Filters lx Its narrow 7nm FWHM bandwidth

Its narrow 7nm FWHM bandwidth has a transmission at H-Alpha of over 90%

customised resolution also supported

Whisper-Quiet Motors

For the intermediate visual observer and beginning astroimager

Focal Length: 2350 mm (80 in)

ZWO EFWMini 5 Position Electronic Filter Wheel for 1.25 and 31mm Filters lx Its narrow 7nm FWHM bandwidthZWO EFWMini 5 Position Electronic Filter Wheel for 1. 25 and 31mm Filters This ZWO EFWMini 5 Position Electronic Filter Wheel for 1. 25 and 31mm Filters is certainly one of the smallest 5 position filter wheels in the world. it is also extremely lightweight, it weighs 300g only. Its housing is CNC machined from aircraft grade aluminium alloy. The stepper motor, that is the heart of any electronic filter wheel, is made by a reliable Japanese company,