The M54 Filter Drawer with 20mm ring design is independently developed by ZWO and specifically made to match with the full-frame cooled camera ZWO ASI6200MM/MC Pro.
The double strong magnets create stronger adsorption, easier installation and pulling out.
The M48*0.75 female thread can be used with the 2inch filters.
The M54*0.75 female thread can be used to connect with the telescope.
And the M54*0.75 male thread can be used to connect with the ASI6200 camera.
M42*0.75 male(external) thread (camera side)
M48*0.75 female(internal) thread (filter end)
M48*0.75 female(internal) thread (telescope side)
Suitable for 2-inch astronomical filters
The best solution of 55mm back focus length
Note：This solution can only reach 56mm back focus length. If you want 55mm back focus length. Also the M48-M42 adapter will block the camera sensor a little bit. So we recommend you use 2”EFW with M68 OAG：
Click here for more connection methods of ASI6200 to get 55mm back focus length:
What’s in the box?
ZWO M54 filter drawer *1
M54-M48F-2mm adapter *1