Nice shot's Al. I like the colour.
You must be just about pushing the limits though with three minute shots. Jupiter rotates at 0.6 degree/min. At that rate you will find it difficult getting clearly defined features at three minutes unless you reduce your magnification. You may notice that some of the features looked just a little bit "stretched"?
Matt, have a look at
this page. Using the extender you put an eyepiece into it and screw one end to the scope (T thread to adapter needed for SCT) and the other end to the camera (adapter needed for ToUcam to do that too). Varying the length of the tube will give you different magnifications. If you can get a hold of Michael Covingtons book "Astrophotography for the Amateur" (a loan from someone) he covers the different types of imaging very well.