The SBIG FW7-STX is a 7-Position, 50mm square filter wheel for STX and Aluma AC series cameras.
We recommend 2mm thick, 50mm x 50mm square unmounted filters.
It is possible to install 3mm filters if you do not fully tighten the carousel filter retainer screws.
Thin 1mm filters are not recommended, and will require shims, not available from us.
Windows 32 and 64 bit OS, Mac