[UBoat]

Thanks for your message and I found that I don't need the ocular adapter if I use the flattener as it comes with a T connection. With a back focus of 56mm for the TS-FS60CB + flattener, 13.5mm for the camera and the TOAG thickness of 13mm I'm assuming the imaging camera spacer will need to be about 30mm and the guide camera spacer about 10mm to give the equal distance for guide and imaging cameras. Does that sound about right?

Peter (also based in Sydney)