QHYCCD 163C Senzor distance

QHYCCD 163C Senzor distance
« on: February 19, 2021, 01:37:52 AM »

 I have a 163C and the sensor distance I would be curious about. If I unwind the original adapter, how exactly is the sensor away from the plane of the camera's outer casing? 6mm or 7mm? It is due to the back focus. I currently have a SW f / 4 corrector and a 200/800 astrograph with a back focus of 53.6mm.
Thanks for the answers