Following Owens excellent

Following Owens excellent talk last night here are links to a book and app I referred to in Q&A.

https://www.springer.com/gb/book/9783662103920?token=sba20&utm_campaign=3_fjp8312_springer_gbp_shopping_sba20&gclid=EAIaIQobChMIjr2oyefi6gIVRrTtCh26zwn0EAQYAiABEgL1t_D_BwE

https://play.google.com/store/apps/details?id=com.vitotechnology.StarWalk2Free&hl=en_GB

I noted the many references to Spectroscopy !

Clear skies,

Jack