4 August 2014 Living with adaptive secondary mirrors 365/7/24
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Abstract
The Large Binocular Telescope has two adaptive secondary mirrors which are used for regular observing in both seeinglimited mode and for diffraction-limited mode unlike the adaptive secondaries at the MMT and Magellan telescopes which are swapped in for diffraction-limited observing only. The LBTO secondary mirrors have been in routine operation for ~ 4 years for the first and for ~ 2 years for the second. We review the operational history of these units and discuss the various failure modes unique to adaptive secondaries as compared with rigid secondaries for seeing-limited observing and more conventional adaptive optics systems for diffraction-limited observing.
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Julian C. Christou, Julian C. Christou, Guido Brusa , Guido Brusa , Juan Carlos Guerra , Juan Carlos Guerra , Michael Lefebvre, Michael Lefebvre, Douglas Miller, Douglas Miller, Gustavo Rahmer, Gustavo Rahmer, Richard Sosa, Richard Sosa, Michael Wagner, Michael Wagner, "Living with adaptive secondary mirrors 365/7/24", Proc. SPIE 9148, Adaptive Optics Systems IV, 91480F (4 August 2014); doi: 10.1117/12.2056361; https://doi.org/10.1117/12.2056361
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