  Motivated by inclination of the Earth's orbit that is not located at galactic
plane for observing the shadow of Sgr A*, we consider the black hole shadow for
arbitrary inclinations and different velocities of observers. A surprising
finding of the study is that rotation axis of a black hole might not be
extracted from its shadow, since the ways of the shadow getting distorted
depend not only on the spin of the black hole, but also velocities of
observers. Namely, appearance of the shadow could be rotated by an angle in
observers' celestial sphere due to the observer in motion. In order to further
confirm this result, a formalism is presented for calculating the shadow in
terms of the velocity perturbations. Besides, we also consider the Earth's
orbit for the shadow of Sgr A* by making use of this formalism.
