SISTER Paper

This page contains all the material necessary to reproduce the results and figures from:

SISTER: Starshade Imaging Simulation Toolkit for ExoplanetReconnaissance


Sergi R. Hildebrandt 1,a , Stuart B. Shaklan 1,b , Eric J. Cady 1,c , and Margaret C. Turnbull 2,1,d

1: Jet Propulsion Laboratory/California Institute of Technology. 2: SETI Institute, Carl Sagan Center for Life in the Universe.

a: srh.jpl.caltech@gmail.com, b: stuart.b.shaklan@jpl.nasa.gov, c: eric.j.cady@jpl.nasa.gov, d: turnbull.maggie@gmail.com

Matlab Code

This code allows you to reproduce all figures and results from the paper: sister_paper.m and scene_sister_paper.m (last update 10/14/20)

Copy sister_paper.m into the software/ subdirectory of your SISTER installation, and scene_sister_paper.m into the config/ subdirectory. You will need Matlab 2015 or some more recent version (see SISTER Handbook)

The version of ZODIPIC that includes the HG phase function used in SISTER's paper can be downloaded here (courtesy of Chris Stark, GFSC). It requires an IDL software license.

Sampling of Starshade's Petal Edge

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Relative Position of a Point Source within Starshade's Petals

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Roman Telescope's Pupil

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Number of Starshade Positions that represent a Spinning Starshade

This section deals with the study of the adequate number of rotations of the starshade needed to generate a PSF basis in the case of a spinning starshade with some specific precision.

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PSF Spatial Extent

This section deals with the study of the adequate size of the spatial extent of the PSF needed to generate a PSF basis in the case of a spinning starshade with some specific precision.

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Sampling of the Pupil

This section deals with the study of the adequate sampling of the pupil needed to generate a PSF basis in the case of a spinning starshade with some specific precision. It is complementary to the PSF Spatial Extent case.

Click here to look at the images that result from the study.

Click here to know the steps to get the study done.

PSF Spacing

This section deals with the study of the adequate distance (spacing) between two consecutive PSF needed to generate a PSF basis in the case of a spinning starshade with some specific precision.

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Wavelength Sampling

This section deals with the study of the adequate wavelength sampling of each PSF needed to generate a PSF basis in the case of a spinning starshade with some specific precision.

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