Hey, sorry I'm bothering you on this old topic, but there is little information on the web about the SkyMax 90 & DSLR.
I've just bought that telescope (a newer version I suppose) and yesterday I've received the T2 extension tube with the camera adapter.
Moving the focus point of the telescope I can see the camera sensor is in the focus range, but in a weird way: Seeing trough the camera's viewfinder I can set the image on focus, but when taking the photo, the image isn't on focus. Did that happen to you?
Also, do you have any picture of the setup at that time when you reached a solution?
I hope that you read this and can help me. This is my first telescope, and I'm just starting with astrophotography.
Cheers 🥂