My book has been translated into English and will be available for purchase by mid-May 2026.
I would like to take this opportunity to extend my heartfelt thanks to Ken Harrison, Ken Hudson, Tom Love, Peter Velez, Hamish Barker, Robin Leadbeater, and Jonathan Dancer, who did a tremendous job proofreading my translations and also provided insightful comments on certain points discussed in the book.
Here is the cover of the English edition
Olivier GARDE
I have read (thanks to google translate) the French version - its the most exciting book in amateur (are we still amateurs?) spectroscopy I know off. It helped me to grow from ādata collectorā to a āscientific observerā - very accessible and well written!
Thanks for the heads up on this Olivier. Iām looking forward to picking up a copy when its avalable.
Thatās awesome news! Iāve been waiting a long time to read this book 
I will provide you with further details, such as the bookās table of contents, as soon as the publisher has set a publication date.
Details of the topics covered in the book are available on the publisherās website:
The book will be available on 4 May, and will no doubt be available for pre-order well in advanc
Hello! Iām sorry, is there a spanish version?
At present, there are no plans for a Spanish translation, but if I can find several people willing to do it, it will be possible. Iāve had the same request for a Japanese version.
However, as I donāt speak either of these languages at all, thereās nothing I can do about it myself.
Hi Oliver! Got it, thank you!
Can someone that does slitless spectroscopy also benefit from the book?
The book is not organised around the use of any particular spectrograph; rather, it describes experiments that can be carried out at the amateur spectroscopy level.
Furthermore, as there is no such thing as a āuniversalā spectrograph, certain experiments require specific types of spectrographs (high-resolution for measuring rotational velocities, low-resolution for applications such as spectral imaging or measuring redshift) .
Some of the experiments in the book can be carried out with an slitless, such as classifying stars by temperature, measuring the expansion velocity of a supernova, or determining the redshift of distant galaxies or quasars. However, it is clear, for example, that an slitless cannot measure the rotational velocity of a galaxy or study a pulsating star.
My a friend would like to introduce this book to the amateur astronomy community in China. He is able to translate it into Chinese, but he doesnāt know how to find a publisher interested in it.
Thanks for your response, will definitely be purchasing this book.
Translation. in Chinese why not ?
But I will ask to my publisher.
There are just a few days to go before my book is available (official release on 4 May).
Iāve just received a few copies from the publisher.
hereās the contents of the book.
Now available in paper print or as an e-book:
Contents can be seen here : o.garde.free.fr/Contents.pdf
