Compute the thermal emission data in Python

[settwi]

For the thermal plasma emission function, we currently rely on IDL .sav files generated externally.

I hope this issue starts a conversation around generating the data in Python.

I made a github gist which shows how to save out all of the emission lines on a temperature grid. This uses the Fiasco package made by @wtbarnes. Those lines can get binned into an (E, T) matrix much like the IDL version, and summed with the continuum. This is one part of the problem.

I stopped working on this after the lines, so I haven't touched the continuum.

Things that need to happen:

• make a continuum emission function analogous to the lines one
• figure out how to integrate the two
• decide how we want to bin things
• ... ?