Figure 15-2: R I V U X G
The Trail of an Asteroid Telescopes used to photograph the stars are motorized to follow the apparent motion of the celestial sphere. Because asteroids orbit the Sun, their positions change with respect to the stars, and they leave blurred trails on time exposure images of the stars. This bluish asteroid trail was recorded by accident by the Hubble Space Telescope. The shorter streaks (mostly yellow) are imaging artifacts.
The Trail of an Asteroid Telescopes used to photograph the stars are motorized to follow the apparent motion of the celestial sphere. Because asteroids orbit the Sun, their positions change with respect to the stars, and they leave blurred trails on time exposure images of the stars. This bluish asteroid trail was recorded by accident by the Hubble Space Telescope. The shorter streaks (mostly yellow) are imaging artifacts.
(R. Evans and K. Stapelfeldt, Jet Propulsion Laboratory; and NASA)