Hi there, I have an SCT that I'd like to use with my f/6.3 focal reducer connected to a variable T-adapter for SCT to my camera which has an M42 thread. The bit that I don't understand is that everything is running M42, how do I insert a filter into this imaging train if they are threaded M48?
I've seen a "ZWO 2" Filter drawer" for sale, but this seems to have M48 on one end and M42 on the other? If I used this, would I need an M48 to M42 adapter? Or is there something else that would work better?