This resolution is adequate to detect the Doppler shift due to the earth s motion around the sun when carefully calibrated, and detect spectroscopic binaries. The illumination slit likewise is controlled from the console. These emission tubes are also controlled from the console. I have found the following steps to work well for processing spectra. Whether I do both these steps and in which order depends strongly upon the signal to noise ratio in the image and requires experimentation with each image in order to best bring out the spectral lines present in the spectra.
Caution is important because one can introduce artifacts into the image with to much processing.
This text file can be imported into Microsoft Excel or other graphing programs where you can create custom graphs such as those I have done with the emission spectra of planetary nebula. Identifying elements requires much work using tables where elements and ions have had there wavelengths of emission or absorption tabulated. The handbook of Physics and Chemistry has extensive tabulated data for all elements as does the Astrophysics literature. See Calibration page for more details on wavelength and flux calibration. Please visit my other pages to see some of the things that can now be accomplished by an amateur in the back yard.