After spending time playing with CDs, cheap plastic diffraction gratings and Cokin Cosmos filter I finally ordered Star Analyser 100 from Paton Hawksley. Exchange rate is good right now and SA cost me 165$A including extension tube and postage.
I will use it mostly to obtain meteor spectra (hopefully) and variable stars spectra..
But right now I wonder if one can capture clouds spectra
– I did not used scope for over six weeks. It is either cloudy, raining or too windy.