Hi all, Does anyone know where I can find data details of how Emission Spectra depends on temperature for the following materials: Single Hydrogen Molecular Hydrogen (H2) Helium That is, as I heat up each of the above materials by themselves, from room temperature to thousands of degrees, I'd like to know, at each temperature step in my heating gas, which emission lines are the brightest and what the overall visible color of the gas is. I know around 10,000 degrees or so, Hydrogen will be all white. I'm sure there is data for this somewhere and that's what I'd like to see. I don't really have time to do all the math of integrating plank curves, black-body integrals, etc. I'm sure someone has the experimental data somewhere, I'm just having a hard time finding it and figured astronomers would know best where to look. Any help, even partial, is appreciated.