Simulating the performance of aperture mask designs for SCALES

Mackenzie R. Lach; Steph Sallum; Andrew Skemer

doi:10.1117/12.2630569

26 August 2022 Simulating the performance of aperture mask designs for SCALES

Mackenzie R. Lach, Steph Sallum, Andrew Skemer

Proceedings Volume 12183, Optical and Infrared Interferometry and Imaging VIII; 121832D (2022) https://doi.org/10.1117/12.2630569
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

Interferometric techniques such as aperture masking have the potential to enhance spatial resolution capabilities when imaging moderate-contrast sources with small angular size, such as close-in exoplanets and circumstellar disks around distant young stars. The Slicer Combined with an Array of Lenslets for Exoplanet Spectroscopy (SCALES) instrument, currently under development, is a lenslet integral field spectrograph that will enable the W. M. Keck Observatory to carry out high-contrast direct imaging of exoplanets between 2 and 5 microns. We explore the potential benefit of aperture masking to SCALES by testing the contrast achievable by several mask designs. The scalessim software package was used to simulate observations at wavelength bins in the M, L, and K bands, with optical path difference (OPD) maps used to simulate realistic Keck adaptive optics performance. Noise from astrophysical and instrumental sources was also applied to simulated signals. Mask designs were assessed based on depth of the generated contrast curves.

Citation Download Citation

Mackenzie R. Lach, Steph Sallum, and Andrew Skemer "Simulating the performance of aperture mask designs for SCALES", Proc. SPIE 12183, Optical and Infrared Interferometry and Imaging VIII, 121832D (26 August 2022); https://doi.org/10.1117/12.2630569

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