Unfortunately Bert I don't have a shutter on this camera.
I don't mind the small movements sideways or even random ones (auto-dithering
) but its when it happens during shots or moves a substantial distance so that the object being imaged moves away from the center of the frame. On some nights I've had the object move 1/4-1/3 the distance from the center along a SW corner diagonal. Last night though it hardly moved at all, a couple of dozen pixels to the south in Dec. With luck it will be clear again tonight and I can check the focuser theory a bit more