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Astronomy Doppler, Christian Contributions to fixed star science. Especially reprinted from the treatises of the Royal Bohemian Society of Sciences (V. episode, volume 4). With 4 figures on one litograph. plate. Prague, In Commission with Borrosch and André (Gottlieb Haase), 1846. 26 p. 4°. Lithographic border on the upper part of the book (spine with 5 small tears, somewhat stained and with traces of use). First and very rare impression of this most important paper of Doppler, in which he proposes to use photography or daguerreotype for the direct determination of the diameters of fixed stars as well as for the determination of the brightness of fixed stars with the photometer he constructed (15 years before Zöllner). Astronomy. - With 1 lithographic plate showing 4 illustrations. - First and very scarce offprint in the original wrappers, of this most important paper by Doppler, where he suggests to use photography or daguerreotypy for the direct determination of diameters of fixed stars, as well as to determine the level of brightness of fixed stars with the photometer he constructed (15 years before Zöllner). - Lithography and letterpress on fresh machine paper, in original publisher's brochure on blue-coloured stock with black ornamental lithographic title printing (spine with five tiny cuttings of former binding, some staining and wear). *

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