Abstract

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References
1.
In modern French, a refracting telescope is called a lunette , the word télescope being reserved for reflectors, which modern astronomers use. Thus the title of this book immediately conveys the sense of an antique instrument.
2.
These include (in chronological order of birth) Pierre Jules César Janssen, Léopold Trouvelot, Joseph Perrotin, Henri Deslandres, Gaston Millochau, Eugène Antoniadi, Fernand Baldet, Bernard Lyot, Charles Bertaud, Henri Camichel, Renée Herman, Jean-Henri Focas, Paul Muller and Roger Servajean.
