Aperture masking interferometry with JWST: calibration and observing strategies

Benjamin J. S. Pope; Louis C. Desdoigts; Dori Blakely; Peter G. Tuthill; Shrishmoy Ray

doi:10.1117/12.3020039

28 August 2024 Aperture masking interferometry with JWST: calibration and observing strategies

Benjamin J. S. Pope, Louis C. Desdoigts, Dori Blakely, Peter G. Tuthill, Shrishmoy Ray

Proceedings Volume 13095, Optical and Infrared Interferometry and Imaging IX; 1309512 (2024) https://doi.org/10.1117/12.3020039
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The James Webb Space Telescope Aperture Masking Interferometer provides NIRISS with its highest angular resolution imaging mode, an ultra-stable non-redundant masking Fizeau interferometer. Until recently, the precision of its interferometric visibilities has been limited to ~ 1% by systematic uncertainties in its optical state and detector noise properties. Using a data-driven calibration of AMI with a differentiable forwards model, this can be improved by more than an order of magnitude, uniquely enabling high angular resolution science not possible from the ground. We will discuss the pipeline and observing strategies required to achieve this, illustrated with science highlights enabled this way from the first two years of AMI data, and generalizations of this approach to kernel phase interferometry.

Conference Presentation

Citation Download Citation

Benjamin J. S. Pope, Louis C. Desdoigts, Dori Blakely, Peter G. Tuthill, and Shrishmoy Ray "Aperture masking interferometry with JWST: calibration and observing strategies", Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 1309512 (28 August 2024); https://doi.org/10.1117/12.3020039

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