Holding mouse 3 and right click allows you to move camera off of center of spaceship while in flight

[Strawberry]

This seems to work better while zoomed in. While in flight, you can hold down right click and mouse 3 and this will remove your camera away from the spaceship. I dont believe theres a way to recenter your camera back on the spaceship (see below, rocket is on the launchpad yet the camera is centered on not that)

[The Aziz]

Home button usually recenters the camera