Korte, Ansgar (Author)
Dick, Wolfgang R. (Author)
The high-school teacher Theodor Grigull (1883-1947) from Werden near Essen in Germany was also a keen amateur astronomer, who undertook a private solar eclipse expedition, and also derived the orbit of hypothetical Planet X beyond the orbit of Neptune.
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Schmidt, Eckehard;
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Vitor Bonifácio;
Isabel Malaquias;
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Portuguese Amateur Astronomy (1850–1910)
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Dick, Wolfgang R.;
Brüggenthies, Wilhelm;
Münzel, Gisela;
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Der Erfinder des Mittenzwey-Okulars: Moritz Mittenzwey (1836--1889)
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Unravelling Starlight: William and Margaret Huggins and the Rise of the New Astronomy
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Early Astronomical Sequential Photography, 1873--1923
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Hilmar W. Duerbeck: Leaves of Memory
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Gingerich, Owen;
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Beek, Viola van;
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“Man lasse doch diese Dinge selber einmal sprechen”. Experimentierkästen, Experimentalanleitungen und Erzählungen zwischen 1870 und 1930
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F. Richard Stephenson;
Catherine Y. Hohenkerk;
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Obligatory amateurs: Annie Maunder (1868-1947) and British women astronomers at the dawn of professional astronomy
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Gerard Gilmore FRS;
Gudrun Tausch-Pebody;
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The 1919 Eclipse Results That Verified General Relativity and Their Later Detractors: A Story Re-Told
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