POPPY may be installed from PyPI in the usual manner for Python packages:
% pip install poppy --upgrade
The source code is hosted in this repository on GitHub.
The following are optional. The first, pysynphot, is recommended for most users. The other optional installs are only worth adding for speed improvements if you are spending substantial time running calculations.
Pysynphot is an optional dependency, but as noted above is highly recommended.
To install or update pysynphot, do the following. (See also http://stsdas.stsci.edu/pysynphot/ and https://trac6.assembla.com/astrolib). WebbPSF has most recently been tested using pysynphot 0.9.5 but is known to work well with earlier versions as well.
Pysynphot is now also available from PyPI:
% pip install pysynphot
If this is your initial installation of pysynphot you need to install the CDBS files. See the pysynphot installation guide. The necessary files are available from https://trac6.assembla.com/astrolib; follow the download links for “throughput files” and “model spectra”. If you already have CDBS installed, then you’re all set and can skip this step.