A publication about limb darkening from PHOENIX spectra will be available later.
The spectra are stored in a 1D FITS image, where the only axis the angle mu, which is given in a FITS extension called “MU”.
The header keywords are essentially the same as for the high resolution spectra, as can be found here.
The response curves for the filters have been taken from the following websites:
In case you require different filters, please send us an email containing its response curve and we will add it to the list.