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arXiv · 2408.17123

The MICADO first light imager for the ELT: MISTHIC simulation pipeline for the high contrast mode of MICADO

Elsa Huby·Pierre Baudoz·Fabrice Vidal·Helen Baran·Yann Clénet·Richard Davies
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Abstract

We present the Python pipeline that was developed to simulate the high contrast mode images of the MICADO instrument. This mode will comprise three classical Lyot coronagraphs with different occulting spot sizes, one vector apodized phase plate, and two sparse aperture masks. One critical aspect of these modes lies in their sensitivity to aberrations, requiring careful integration of non common path aberrations, as well as turbulent adaptive optics (AO) residuals. Besides, they will be operated following a specific observing strategy based on pupil tracking mode. For these reasons, we have developed the MICADO SimulaTor for HIgh Contrast (MISTHIC) pipeline to simulate realistic image cubes and derive the expected performance of these modes. Several sources of aberrations can be included: turbulent AO residuals, but also static or rotating aberrations, amplitude aberrations, simple Zernike screens... Including MICADO's specific features, such as the absence of atmospheric dispersion prior to the coronagraphic focal plane mask, our intent is to make this pipeline available to the community. This tool can be used to prepare scientific observations with the high contrast mode of MICADO, by predicting the performance to be expected within the most realistic assumptions.

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Elsa Huby, Pierre Baudoz, Fabrice Vidal, Helen Baran, Yann Clénet, Richard Davies. 2024-08-30. The MICADO first light imager for the ELT: MISTHIC simulation pipeline for the high contrast mode of MICADO. https://doi.org/10.1117/12.3020009

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