As many of us will know, you have to place the chip of your imaging camera close to 55mm from the back glass of an MPCC. My current setup with a canon camera achieves this.
I've been looking at the QHY9 mono as a possible first CCD, but I can't find a clear answer on how this will work with the MPCC and my OAG (which is quite thin). The few posts I've found suggest it doesn't work, but this doesn't make much sense given the numbers I've found. I'm wondering if anyone can definitely tell me how much room there is to play with.
QHY-9 : 15mm
QHY CFW2 : 17mm (ultrathin) to 21.5mm (standard)
TS 9mm OAG : 9mm?
This all adds to 41 to 45.5 mm. Which means there is another 9.5 to 14 mm buffer to get to 55mm. Surely adapters etc. wouldn't use this all up? Am I missing something?