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(a) Eigen values of AO systems composed of the DM97, modeled with an actuator coupling of 15%, and 2 SH sensors with different lenslet arrays. (b) Evolution of the condition number of the systems studied in (a), with respect to the number of filtered modes. (c) Same than (a) but for an actuator coupling of 60% (d) Same than (b) but for the system studied in (c). The arrows indicate the point where eigen values were filtered in our analysis.
