An exposure time calculator for high-contrast polarimeters

Meiji Nguyen; Rebecca Jensen-Clem; Max Millar-Blanchaer; Sagnick Mukherjee; Jason Wang; Andrew Skemer

doi:10.1117/12.2597978

20 September 2021 An exposure time calculator for high-contrast polarimeters

Meiji Nguyen, Rebecca Jensen-Clem, Max Millar-Blanchaer, Sagnick Mukherjee, Jason Wang, Andrew Skemer

Author Affiliations +

Proceedings Volume 11823, Techniques and Instrumentation for Detection of Exoplanets X; 118231X (2021) https://doi.org/10.1117/12.2597978
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Conference Poster

Abstract

We present an exposure time calculator (ETC) developed for polarimetric observing modes for two next-generation high-contrast direct imaging instruments planned for the W. M. Keck Observatory: SCALES1 (Santa Cruz Array of Lenslets for Exoplanet Spectroscopy), a low-resolution mid-infrared integral field spectrograph; and a future polarimetric observing mode for NIRC2, the near-infrared adaptive optics (AO) supported high-contrast direct imager currently on the Keck Observatory. In addition to producing estimates of companion signal-to-noise ratios (SNR, see Fig. 2a), the ETC calculates the polarization fraction that would be detected with a user-specific SNR in a given exposure time (see Fig. 2b). The ETC includes a graphical user interface and is packaged as a polarimetry add-on to the PSI-Red thermal imaging module of PSISim, an instrument performance simulation tool for the Planetary Systems Imager2 - a modular suite of AO-supported instruments planned for the Thirty Meter Telescope

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Meiji Nguyen, Rebecca Jensen-Clem, Max Millar-Blanchaer, Sagnick Mukherjee, Jason Wang, and Andrew Skemer "An exposure time calculator for high-contrast polarimeters", Proc. SPIE 11823, Techniques and Instrumentation for Detection of Exoplanets X, 118231X (20 September 2021); https://doi.org/10.1117/12.2597978

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