Hi ! The present to ask you what features should have the ring adapter to connect sbig st8 xme + cfw 9 V2 to the coma corrector skywatcher AO-SUPERCOMACORR f / 4 with m48x0.75 connection? Thank you The coma corrector has a back focus of 55 mm
In the site however you have to know the thickness. ... i am looking for information about the inches or millimeters of the back focus of the setup st8 xme + cfw 9 v2 to convey the thickness of the adapter ring that serves to connect it to the coma corrector that has a 55mm back focus
The ST-8XME back focus is approximately 0.92", per the user manual: http://diffractionlimited.com/wp-content/uploads/2016/03/USBmanRev14.pdf The CFW-9 is 1.00" inches thick.