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James Webb Space Telescope PSF simulation tool - NOTE THIS VERSION OF REPO IS SUPERCEDED BY spacetelescope/webbpsf
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WebbPSF: Simulated Point Spread Functions for JWST and WFIRST


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WebbPSF produces simulated PSFs for the James Webb Space Telescope, NASA's next flagship infrared space telescope. WebbPSF can simulate images for any of the four science instruments plus the fine guidance sensor, including both direct imaging and coronagraphic modes.

WebbPSF also supports simulating PSFs for the upcoming Wide Field Infrared Survey Telescope (WFIRST), including its Wide Field Instrument and a preliminary version of the Coronagraph Instrument.

Developed by Marshall Perrin, Joseph Long, Neil Zimmerman, Robel Geda, Shannon Osborne, Marcio Melendez Hernandez, Lauren Chambers, Keira Brooks, and collaborators, 2010-2018.

Documentation can be found online at

WebbPSF requires input data for its simulations, including optical path difference (OPD) maps, filter transmission curves, and coronagraph Lyot mask shapes. These data files are not included in this source distribution. Please see the documentation to download the required data files.

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