Sirius can be seen as the brightest star in the sky below and to left of Orion's belt, and Betelgeuse is the reddish star just above Orion's belt. As the movie progresses the observer moves toward the black hole. An odd diffuse glow of light appears in the center of the screen. Soon a black spot appears - the black hole itself. The black hole is almost completely dark - light cannot escape from it.
Black holes do release a slight bit of light as they evaporate, as postulated by Hawking.
This is because the starlight that originally reached you is now strongly attracted toward the black hole and hence deflected away from you. Only starlight passing further from the black hole might now be attracted toward the black hole so that it is deflected to your eye. Here the strong gravity of the black hole has pulled another image of stars around the far side toward your eye. Soon there are two discernable images of everything in the sky. A secondary images of star can be identified with their corresponding primary image by noting that they can be connected by drawing a straight line on the sky through the center of the black hole and finding stars of like color.