Tailoring Strong Lensing Cosmographic Observations
  Strong lensing time delay cosmography has excellent complementarity with
other dark energy probes, and will soon have abundant systems detected. We
investigate two issues in the imaging and spectroscopic followup required to
obtain the time delay distance. The first is optimization of spectroscopic
resources. We develop a code to optimize the cosmological leverage under the
constraint of constant spectroscopic time, and find that sculpting the lens
system redshift distribution can deliver a 40% improvement in dark energy
figure of merit. The second is the role of systematics, correlated between
different quantities of a given system or model errors common to all systems.
We show how the levels of different systematics affect the cosmological
parameter estimation, and derive guidance for the fraction of double image vs
quad image systems to follow as a function of differing systematics between
them.
