Dubhe being the last of the "dipper" stars in The Big Dipper, Ursa Major. This pic informs us a bit about how those stars stay in place. I guess we knew that already.

I have noticed that compared to both my desktop images of this, and the thumbnail, the "original" image can do a violet shift depending on the monitor or the angle at which the monitor is viewed. The pic should be pretty close to the thumbnail in terms of the blues. Enjoy Dubhe