Tandum,
Basically yes!
The idea is to use the spectroscope to break up the starlight into a spectrum and look at the various dark and bright areas. These "lines" can give us some valuable data on the type and consistancy of the star.
Many beginners use a StarAnalyser, Baader or Rainbow transmission grating ( it looks like a 1 1/4" filter) which gives a good low resolution spectrum. It can be mounted on front of a tele lens to give some good spectra or mounted infront of an eyepiece in your telescope to give a more detailed magnified image.
The next step is to use a fine slit at the focus of the telescope to improve the resolution to the grating.......
There's an article on file which might help. I've also uploaded a detailed write-up on the Littrow with some good references. We're here to help and encourage!!
http://www.iceinspace.com.au/index.p...63,339,0,0,1,0