MarkMo There may be two reasons for the black screen after you replace the eyepiece with a camera,
1 The Jupiter is not really centered, so after you installed the camera, Jupiter is actually out of the field of view of the camera. Please make sure Jupiter is centered, I recommend you do not use the 2X at first, because when you add the Barlow, the field of view will be smaller, and it will be more difficult for you to find Jupiter. When you do find Jupiter from the camera and center it again, then you can add the Barlow.
2 The exp and gain are not enough, try using a higher gain and longer exp.
