"Tonkin combines clear and concise writing with the ability to express complex concepts in a form that will be understandable by any likely reader of the book ... well-written and informative ... should be on the reading list of every amateur astronomer..."Deep Sky Observer
"... excellent introduction to spectroscopy fundamentals ... comprehensive guidance is given ... invaluable reference manual ... straightforward coverage of what could be a daunting subject ... highly readable..."Federation of Astronomical Societies Newsletter
"... spectroscopy has been ignored by amateurs – this book should help redress the balance... sample spectra are included that rival professional work ... plenty of useful references ... must be recommended."Astronomy Now
"...substantial and excellent roundup of the physics behind light and stellar spectra ... useful sections on building spectroscopes for mounting to telescopes ... (the book sparked) an interest in spectroscopy and a desire to learn more..." Popular Astronomy
"Recommended." BAA Journal