SECCHI, Le Soleil, 1870

First edition.

Angelo Secchi (1818-1877) was a prominent Italian Jesuit priest and astronomer, director of the Roman College Observatory. A pioneer of stellar spectroscopy, he is recognized as one of the pioneers of spectroscopy. His work on the Sun was revolutionary, using spectroscopic techniques to study its composition and structure. This work is a synthesis of the knowledge of the time about our star, integrating modern discoveries and the Sun's relationships with other celestial bodies.

Numerous figures in the text, some with color highlights. Two fold-out color spectrum plates.