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Table 4.

Optimized observation plan for the candidate stars in the N2 band.

Star Observation number Month Yield increase
α Cen A 1 0.477
Sirius 1 0.277
α Cen B 1 0.263
Sirius 2 3 0.083
Procyon 1 0.061
α Cen A 2 3 0.050
α Cen B 2 3 0.045
Altair 1 0.043
Sirius 3 6 0.038
α Cen A 3 6 0.027
Procyon 2 2 0.022
α Cen B 3 4 0.020
Sirius 4 11 0.018
α Cen A 4 9 0.018
α Cen B 4 6 0.015
Altair 2 2 0.014
Procyon 3 4 0.010
τ Ceti 1 0.008
Altair 3 4 0.006
Procyon 4 6 0.005
Altair 4 6 0.002

Notes. The list includes the initial observation (month) and three observations at later dates based on a maximum increase in yield each date for the top five stars. Certain stars benefit more from repeat observations, in part because the benefits of repeat observations are inclination dependent. As the chart shows, observing τ Ceti for the first time provides very low yield. Summing yield prior to τ Ceti results in an expected yield of 1.48 planets in the N2 band. This observation plan would take approximately 34 h to perform in N2 only if we assume 50% efficiency.

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