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ChiantiPy is the Python interface to the CHIANTI atomic database for astrophysical spectroscopy. It provides the capability to calculate the emission line and continuum spectrum of an optically thin plasma based on the data in the CHIANTI database.

What is CHIANTI?

CHIANTI provides a database of atomic data that can be used to interpret the emission of spectral lines and continuua emitted from high-temperature, optically-thin astrophysical sources. The CHIANTI project provides a suite of routines written in Interactive Data Language (IDL) to access the database and calculate various quantities for use in interpreting observed spectra or producing synthetic spectra.


The following dependencies are required to run ChiantiPy,

The following two are extremely useful for running Python programs

Optionally, if you'd like to use the GUI interfaces,

If you are not familiar with installing Python and the needed dependencies, we recommend the Anaconda platform. Next, download the CHIANTI database. Assuming you've placed the CHIANTI tree in $HOME, set the environment variable in your .bashrc file,

Finally, clone and install the source from GitHub,


As a quick example, we'll calculate the populations of the top 10 levels of Fe XIV as a function of temperature at constant density and plot them:


For more information about installing and using either ChiantiPy or the CHIANTI atomic database, check out the following links:

Source: README.rst, updated 2017-02-26

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