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An exposure time calculator for high-contrast polarimeters

Nguyen, Meiji M. and Jensen-Clem, Rebecca and Millar-Blanchaer, Max A. and Mukherjee, Sagnick and Skemer, Andrew and Wang, Jason (2021) An exposure time calculator for high-contrast polarimeters. In: Techniques and Instrumentation for Detection of Exoplanets X. Proceedings of SPIE. No.11823. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 118231X. ISBN 9781510644847.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Jensen-Clem, Rebecca0000-0003-0054-2953
Millar-Blanchaer, Max A.0000-0001-6205-9233
Skemer, Andrew0000-0001-6098-3924
Wang, Jason0000-0003-0774-6502
Additional Information:© 2021 Society of Photo-Optical Instrumentation Engineers (SPIE).
Subject Keywords:Direct imaging, polarimetry, adaptive optics, exposure time calculation
Series Name:Proceedings of SPIE
Issue or Number:11823
Record Number:CaltechAUTHORS:20220615-21042400
Persistent URL:
Official Citation: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);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115176
Deposited By: Tony Diaz
Deposited On:17 Jun 2022 20:22
Last Modified:17 Jun 2022 20:22

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