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I agree 200%
The Star Analyser/ Rainbow Optics gratings are the ideal way to start.
Cost effective, easy to set-up and easy to use.
The limited resolution and dispersion does limit the data, but nevertheless provides ideal training in the processing of spectra through both IRIS and VSpec.
Janet S. over here in the UK has actually managed some interesting results using the SA100 in the second order ie double the dispersion!
I also have a guy in the US who wants the monitor the Zeeman effects on sunspot groups using a hi-res slit spectroscope....it's never ending...
Finding a cheap solution for novices was the driving force behind the development of the Spectra-L200.
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