Living with adaptive secondary mirrors 365/7/24

Julian C. Christou; Guido Brusa; Juan Carlos Guerra; Michael Lefebvre; Douglas Miller; Gustavo Rahmer; Richard Sosa; Michael Wagner

doi:10.1117/12.2056361

4 August 2014 Living with adaptive secondary mirrors 365/7/24

Julian C. Christou, Guido Brusa , Juan Carlos Guerra , Michael Lefebvre, Douglas Miller, Gustavo Rahmer, Richard Sosa, Michael Wagner

Author Affiliations +

Proceedings Volume 9148, Adaptive Optics Systems IV; 91480F (2014) https://doi.org/10.1117/12.2056361
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

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.

Citation Download Citation

Julian C. Christou, Guido Brusa , Juan Carlos Guerra , Michael Lefebvre, Douglas Miller, Gustavo Rahmer, Richard Sosa, and Michael Wagner "Living with adaptive secondary mirrors 365/7/24", Proc. SPIE 9148, Adaptive Optics Systems IV, 91480F (4 August 2014); https://doi.org/10.1117/12.2056361

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