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Spectroscopy 101
If I were starting again, I would definately start with a Rainbow/ Star Analyser/Baader type transmission grating!
These look like a bit like a regular 1 1/4" filter and just screw into the eyepiece ( for visual work) or into the nosepiece of a CCD adaptor. With this simple set up you can obtain some wonderful star spectra. By adding a slit infront of the eyepiece it can be "modified" for use on the Sun or expanded objects ie planetary nebulae, comets etc etc.
A wonderful introduction at the same cost as a good eyepiece.
In the meantime I continue to search for the Holy Grail......
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