Background
Schröter was born in Erfurt, and studied law at Göttingen University from 1762 until 1767, after which he started a ten-year-long legal practice.
(This is a reproduction of a book published before 1923. T...)
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
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(This is a reproduction of a book published before 1923. T...)
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Beobachtungen Des Grossen Cometen Von 1807: Sammt Einem Nachtrage Zu Dem Aphroditographischen Fragmenten Johann Hieronymus Schröter Vandenhoek-Ruprecht, 1811 Science; Astronomy; Comets; Science / Astronomy; Venus (Planet)
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Astronomer cartographer jurist
Schröter was born in Erfurt, and studied law at Göttingen University from 1762 until 1767, after which he started a ten-year-long legal practice.
University of Göttingen.
In 1779 he acquired a three-foot-long (91 cm, almost one metre) achromatic refractor with 2.25-inch (57 mm) lens (50 mm) to observe the Sun, Moon and Venus. Herschel"s discovery of Uranus in 1781 inspired Schröter to pursue astronomy more seriously, and he resigned his post and became chief magistrate and district governor of Lilienthal. In 1784 he paid 31 Reichsthaler (about 600 Euros of today) for a Herschel reflector of 122 cm focal length and 12 cm aperture.
He quickly gained a good name from his observational reports in journals, but was not satisfied and in 1786 paid 600 Reichstaler (an equivalent of six months earnings) for a 214 cm focal length 16.5 cm aperture reflector with eyepieces allowing up to 1,200 magnification, and 26 Thaler for a screw-micrometer.
With this he systematically observed Venus, Mars, Jupiter and Saturn. Schröter made extensive drawings of the features of Mars, yet curiously he was always erroneously convinced that what he was seeing was mere cloud formations rather than geographical features.
In 1791 he published an important early study on the topography of the Moon entitled Selenotopographische Fragmente zur genauern Kenntniss der Mondfläche. The visual lunar albedo scale developed in this work was later popularised by Thomas Gwyn Elger and now bears his name.
In 1793 he was the first to notice the phase anomaly of Venus, now known as the Schröter effect, where the phase appears more concave than geometry predicts.
His two famous assistant astronomers were Karl Ludwig Harding (1796–1804) and Friedrich Wilhelm Bessel (1806–1810). In 1813, he suffered the disruptions of the Napoleonic Wars: his work was ruined by the French under Vandamme, who destroyed his books, writings and observatory. He never recovered from the catastrophe.
His drawings of Mars were not rediscovered until 1873 (by François J Terby) and were not published until 1881 (by H G van de Sande Bakhuyzen), well after his death.
The lunar crater Schröter and the Martian crater Schroeter are named after him, as is Vallis Schröteri (Schröter"s Valley) on the Moon.
The lunar crater Schröter and the Martian crater Schroeter are named after him, as is Vallis Schröteri (Schröter's Valley) on the Moon.
(This is a reproduction of a book published before 1923. T...)
(This is a reproduction of a book published before 1923. T...)
Academy of Useful Science. German Academy of Sciences Leopoldina. Royal Society; Royal Swedish Academy of Sciences.
Bavarian Academy of Sciences and Humanities.
Göttingen Academy of Sciences. Russian Academy of Sciences.
Russian Academy of Sciences. French Academy of Sciences]
He was elected a member of the Royal Swedish Academy of Sciences in 1794 and elected a Fellow of the Royal Society in April 1798.
