I have not been able to find a M54 male to male adapter to mount the camera with tilt adapter to the back of the EFW. Does ZWO make such an adapter?
6200(12.5mm)+sensor tilter(5mm)+2" EFW(20mm)+M54-M48+16.5mm M48-M42 adapter, you will get a total back focus of 54mm, but it is difficult to adjust the sensor tilt.
When reducing the image train diameter to 42mm, will there be significant image vignetting? The image chip is about 44mm diag. and I am using an F4 refractor which will probably make matters worse.
You mention attaching the camera w/ tilter to the back of the EFW, Do you sell a 54mm male to male adapter? As both camera and EFW have female fittings. I don't know why ZWO didn't make a male threaded output on the camera similar to most of the other cameras ZWO makes.
Sorry we do not have this M54-M54 male adapter.