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arXiv · 2608.14864

An open-source data processing pipeline for Keck / NIRC2-Polarimetry

Briley L. Lewis·Maxwell A. Millar-Blanchaer·Rebecca Zhang·Jayke Nguyen·Max Brodheim·Ashish Uhlmann
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Abstract

The Keck/NIRC2 infrared imager was recently upgraded with a new suite of polarimetric observing modes. This polarimetry upgrade (referred to as NIRC2-Pol) will open up a wide range of new astronomical studies, including investigations of exoplanets, the Galactic center, active galactic nuclei and the solar system. Astronomical polarimeters require sophisticated data reduction, especially for quantitative polarimetry requiring the use of a Mueller Matrix model for instrumental polarization calibration. This work presents the design of a flexible, user-friendly, open-source data processing pipeline intended for use with NIRC2-Pol, summarizing its key steps and details of its ongoing implementation.

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Briley L. Lewis, Maxwell A. Millar-Blanchaer, Rebecca Zhang, Jayke Nguyen, Max Brodheim, Ashish Uhlmann. 2026-08-14. An open-source data processing pipeline for Keck / NIRC2-Polarimetry. https://arxiv.org/abs/2608.14864

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