This site is not dedicated on how to record star spectra, what is the device required or the diffenrent optical combination which can be used to obtain spectraimages. Wavelenght calibration is used to allow spectra comparison and lines identification with better accuracy. It is the basic spectral processings which enable most of the spectral measurements and functions. Spectral lines identification toolbox Visual Spec includes several library which help for line identifaction or spectral type comparison. Profil document is generated from a spectral image or from an X,Y list stored in a simple text file.
Profil document displays the intensity curve of the spectrum by pixel.
After wavelenght calibration it then will be possible to change the pixel axis into wavalenght axis.