STARDIS performs local thermodynamic equilibrium (LTE) radiative transfer calculations to generate synthetic stellar spectra from input model atmospheres. Built in part on structures from TARDIS (ascl:1402.018), it ingests configuration files and atomic data, computes opacity and radiation transport through a spherically symmetric plasma, and produces spectral outputs over user-specified wavelength grids. The package includes tools for setting up environments, running model configurations, and plotting resulting spectra in interactive workflows. STARDIS supports modular experimentation with opacity sources, transport options, and model parameters to facilitate generation and analysis of synthetic spectra.

wsynphot provides a broad set of filters, including observation facility, instrument, and wavelength range, and functions for imaging stars to produce a filter curve showing the transmission of light for each wavelength value. It can create a filter curve object, plot the curve, and allows the user to do calculations on the filter curve object.