From Exoplanets to Quasars: Adventures in Angular Differential Imaging
  Angular differential imaging provides a novel way of probing the high
contrast of our universe. Until now, its applications have been primarily
localized to searching for exoplanets around nearby stars. This work presents a
suite of applications of angular differential imaging from the theoretical
underpinning of data reduction, to its use characterizing substellar objects to
a new application looking for the host galaxies of damped Lyman {\alpha}
systems, which are usually lost in the glare of ultra-bright quasars along the
line of sight.
