ZWO M54 to M48 adapter for ZWO M54 Filter Drawer or ZWO 2' EFW

This M54-M48-2 adapter has been independently developed by ZWO and mainly used for connecting to 2”EFW and M54 filter drawer via M48 thread.

This adapter provides you with a female M48 thread on the telescope side.

The thickness (optical length) of this adapter is 2mm.

The edge is knurled to increase friction to make the installation and disassembly easier.

Examples of how to achieve a 55mm back focus distance: