These are Python tools for displaying and fitting giant extrasolar planet ring systems, as detailed in Kenworthy and Mamajek (2015).
If you have
astropy installed, then this should get you editing rings from the J1407b model:
git clone https://github.com/mkenworthy/exorings.git cd exorings/ python disk_sim.py -s 33000. -r 54220.65.try9.33kms.fits -d 54220.65.try9.33kms.fits -o 54220.65.try10.33kms.fits
Citing this code
Kenworthy, M.A., 2015, Exorings, Astrophysics Source Code Library, record ascl:1501.012
The code is released under an ISC license, which is functionally equivalent to the BSD 2-clause license but removes some language that is no longer necessary.