ZWO EFW FILTER WHEEL 7 x 2" extension as it is very close

as it is very close to the Hydrogen Epsilon line

Note: This is NOT compatible with the previous version of the ZWO filter drawers

which are ready to accept the Delta T controller

The aluminium tube is internally blackened to avoid internal reflection

This adapter allows you to replace the stock focuser of the Borg 90FL & 107FL f/3

ZWO EFW FILTER WHEEL 7 x 2" extension as it is very closeThe Next Generation 2025 ZWO Electronic Filter Wheel 7 x 2" is a major upgrade over the previous generation with a new anti light leak design and refined mechanics for smoother, more consistent rotation. The new 2025 EFW series introduces a series of structural refinements to eliminate light leakage from all directions, including: Upgraded Sealing A re engineered slot fit chassis provides a tighter mechanical interface between the front and rear