ZWO 2" to 1.25" Filter Adapter (2 inch to 1.25 inch)

The filter adapter ring allows you to use the filter with a smaller filter thread size.

No need to buy another set of filter drawers, the 2”-1.25” filter adapter ring will help you directly fit the 1.25” filter onto a 2” filter drawer or filter wheel.

Supported list:

ZWO 5×2”EFW

ZWO 7×2” EFW

ZWO filter drawer series, including M42 filter drawer and M54 filter drawer

The effect when connecting 2” filter drawer:

The effect when connecting 2”EFW:

We recommend you use ASI533, ASI183, ASI294, and ASI1600 with this filter adapter ring since cameras with bigger sensors may lead to vignetting when matching the 1.25” filters.