The ZWO Electronic 8-Position Filter Wheel holds up to eight (8) 1.25-inch mounted or 31 mm unmounted filters. If using 31 mm filters, these can be held in place using the included set of screws and washers from ZWO.

Machined from black anodized, aircraft-grade aluminum, the ZWO EFW8 is sure to be an exceptional and reliable addition to your astrophotography system. This filter wheel weighs just under one pound (14 ounces) and is only 20 mm thick, making this an extremely low profile piece of your imaging train.

Features of the ZWO Electronic 8 Position Filter Wheel

• The power consumption of this EFW is approximately 120mAh @ 5V, which can be operated from the Cooled CCD's USB hub.
• It can be rotated in both counterclockwise or clockwise direction for filter selection.
• Weighs only 14 ounces.