Hi all,
My Obsession UC18 telescope is able to be remote controlled via the ASCOM driver for the ServoCAT.
For mosaics of large objects (>5x my field of view) I use the virtual hand pad of the ASCOM driver to bump over to the next part of the target (by about a half of the field of view to provide overlap from one frame to the next).
The Rosette required 30 or so frames (and I still need more) using my Mallincam DS10cTEC camera.
I really enjoy my ServoCAT gen3 and the ASCOM driver remote control of my DOB.

Richard