Extracting the scalloping error from closed loop AO data

Miska Le Louarn; Henri Bonnet; Michael Esselborn; Pierre-Yves Madec; Enrico Marchetti

doi:10.1117/12.2202718

5 July 2016 Extracting the scalloping error from closed loop AO data

Miska Le Louarn, Henri Bonnet, Michael Esselborn, Pierre-Yves Madec, Enrico Marchetti

Proceedings Volume 10012, Integrated Modeling of Complex Optomechanical Systems II; 100120A (2016) https://doi.org/10.1117/12.2202718
Event: Integrated Modeling of Complex Optomechanical Systems II, 2015, Varenna, Italy

Abstract

In this paper, we present an algorithm and supporting simulations results showing how a single conjugated AO system can be used to detect a scalloping error occurring in the telescope. We show that when the scalloping error modes are entered in the reconstruction modal basis, the Deformable Mirror shape can be used to estimate the scalloping error through a simple matrix vector multiply. Temporal averaging allows to get rid of the atmospheric noise on the scalloping measurement assuming a perfect “scalloping actuator” and to get a measurement accuracy of about 20nm rms.

Citation Download Citation

Miska Le Louarn, Henri Bonnet, Michael Esselborn, Pierre-Yves Madec, and Enrico Marchetti "Extracting the scalloping error from closed loop AO data", Proc. SPIE 10012, Integrated Modeling of Complex Optomechanical Systems II, 100120A (5 July 2016); https://doi.org/10.1117/12.2202718

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