[Pete75 (Pete)]

Originally Posted by AstroViking

Coming back to your situation, Peter, you need to configure your gear in the following order:

Focus Tube -> Flattener -> Filter Drawer -> T-ring -> Camera

At the same time, you need to maintain the correct back-focus distance between the last optical element in the flattener and the DSLR's sensor - usually 55mm. So you may need to add a spacer between the flattener and the filter drawer. (The guidance I have seen is to keep the filter as close to the camera as possible.)

Once you know all the threads of all the parts, it's fairly easy to find the necessary step-up/down adapters and the required spacers. It's just a total PITA sorting it out initially.

Cheers,
V

Ahh thanks heaps