SOFTWARE DI GESTIONE SPETTRI:

http://www.astrosurf.com/buil/us/book2.htm

COSTRUZIONE SPETTROGRAFI MED E HI RES

http://www.astroman.fsnet.co.uk/spectro.htm

LINKS UTILI

http://www.astrosurf.com/buil/us/book2.htm

TEORIA

http://www.infini-t.com/spectra.htm
http://www.astro.uiuc.edu/~kaler/sow/spectra.html#sequence
http://www.twcac.org/Tutorials/spectral_sequence.htm#Spectral%20Sequence
http://www.astro.psu.edu/users/stark/links/spectra.html
http://www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml