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tokens: We enthusiastically thank the staff of Siding Spring Observatory and the W. M. Keck Observatory and its AO team, for their dedication and hard work. The authors wish to pay their respects to the Elders – past, present and future – of the traditional lands on which Siding Spring Observatory stands and to those of Hawai'ian ancestry on whose sacred mountain we are privileged to be guests. Without their generous hospitality, these observations would not have been possible. AMM, LJK, and MAD acknowledge the support of the Australian Research Council (ARC) through Discovery project DP130103925. This work was also partially funded by the Deanship of Scientific Research (DSR), King Abdulaziz University, under grant no. (5-130/1433 HiCi). The authors acknowledge this financial support from KAU. AMM and CEM also acknowledge support by the National Science Foundation under award number AST-0908796.