The optical alignment of the coronagraphic masks of SHARK-NIR: paving the way for exoplanets detection and characterization

Gabriele Umbriaco; Elena Carolo; Daniele Vassallo; Davide Greggio; Luca Marafatto; Jacopo Farinato; Pierre Baudoz; Maria Bergomi; Federico Biondi; Luigi Lessio; Alexis Carlotti; Roberto Ragazzoni; Valentina Viotto

doi:10.1117/12.2561409

15 December 2020 The optical alignment of the coronagraphic masks of SHARK-NIR: paving the way for exoplanets detection and characterization

Gabriele Umbriaco, Elena Carolo, Daniele Vassallo, Davide Greggio, Luca Marafatto, Jacopo Farinato, Pierre Baudoz, Maria Bergomi, Federico Biondi, Luigi Lessio, Alexis Carlotti, Roberto Ragazzoni, Valentina Viotto

Author Affiliations +

Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114474R (2020) https://doi.org/10.1117/12.2561409
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

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Abstract

SHARK-NIR is a coronagraphic camera with spectroscopic capabilities for the Large Binocular Telescope (LBT) currently in its AIV phase, and operates in the near-infrared regime between 0.96 µm to 1.7 µm. We describe the test bench for analyzing and integrating the coronagraphic masks, by reproducing the focal plane scale, the entrance pupil dimension, and the coronagraphic techniques as similar as possible to the final assembly. The alignment procedures and code developed in Python language evaluates if these methods are accurate enough to reach the design tolerances and contrast requirements.

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Gabriele Umbriaco, Elena Carolo, Daniele Vassallo, Davide Greggio, Luca Marafatto, Jacopo Farinato, Pierre Baudoz, Maria Bergomi, Federico Biondi, Luigi Lessio, Alexis Carlotti, Roberto Ragazzoni, and Valentina Viotto "The optical alignment of the coronagraphic masks of SHARK-NIR: paving the way for exoplanets detection and characterization", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114474R (15 December 2020); https://doi.org/10.1117/12.2561409

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