I've been experimenting on
www.spectralcalc.com and found I can produce reference spectra for a selection of molecules in the visible band. Attached are the PDF plots of Water, O2 and CO2.
It is also possible to extract the data to a delimited file and then massage it in Excel into a format we can use in Visual Spec. I've worked out how to get it to Excel at least
- the rest should be easy (I've done it before).
At the moment I've exceeded my daily allowance on spectralcalc, so I'll work on it some more later.
The other molecules that I can get spectra for are OH, HF and HCl. I haven't found any others on the list of options that have lines in the visible band.
BTW 1µm = 10000Å
Al.