Mat,
There are a few members on IIS with the SA100 gratings and some with more complex slit spectrographs (which provide better resolution)
I say using the SA100 is "Spectroscopy 101"
My webpage may be helpful.
http://www.astronomicalspectroscopy.com/
I use BASS project for my spectral processing...
https://uk.groups.yahoo.com/neo/grou...s_001356094893