Framework & Caveats {#caveats}
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In this work we estimate exoEarth candidate yield using simple completeness and exposure time calculators, analogous to several previous studies [e.g., @2005ApJ...624.1010B; @2012PASP..124..418T]. Our exoEarth candidate yield calculations assume that all targets can be observed for the desired exposure time. We ignore mission scheduling constraints and realtime cost-based decision making that are included in more complex “mission execution simulators" [e.g., @2010PASP..122..401S]. However, the yield maximization methods described below run rapidly ($\sim$ few seconds on a single $2.4$ GHz processor) and can be used to inform realtime decisions in mission execution simulators.

We make a number of assumptions and approximations to simplify our estimates of exoEarth candidate yield. We budget one year of exposure time for all exoEarth observations. We do not include overheads associated with the observations (e.g., telescope slew times, coronagraph wavefront correction time, etc.) within this budget. Estimates for coronagraph overheads are poorly constrained at this time, as they depend strongly on many detailed mission design characteristics, including the coronagraph used, the telescope thermal and mechanical stability, and the wavefront control system used. We therefore ignore overheads for now and simply note that the total exposure time budget of one year is not 