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Encyclopedia > Eduard Schoenfeld

Eduard Schönfeld (December 22, 1828 - May 1, 1891), German astronomer, was born at Hildburghausen, in the duchy of Meiningen. December 22 is the 356th day of the year (357th in leap years) in the Gregorian Calendar. ... 1828 was a leap year starting on Tuesday (see link for calendar). ... May 1 is the 121st day of the year in the Gregorian calendar (122nd in leap years). ... 1891 was a common year starting on Thursday (see link for calendar). ... An astronomer or astrophysicist is a scientist whose area of research is astronomy or astrophysics. ... Hildburghausen is a town in Thuringia, capital of the district Hildburghausen. ... Meiningen is a town in Germany - located in the Southern part of the state Thuringia in the district of Schmalkalden-Meiningen. ...


He had a distinguished career at the gymnasium of his native town, and on leaving desired to devote himself to astronomy, but abandoned the idea in deference to his father's wishes. He went first to Hanover, and afterwards to Cassel to study architecture, for which he seems to have had little inclination. In 1849 we find him studying chemistry under Bunsen at Marburg, where his love for astronomy was revived by Gerling's lectures. Architecture (in Greek αρχή = first and τέχνη = craftsmanship) is the art and science of designing buildings and structures. ... 1849 was a common year starting on Monday (see link for calendar). ... Chemistry (in Greek: χημεία) is the science of matter and its interactions with energy and itself (see physics, biology). ... Robert Wilhelm Bunsen (31st March, 1811 – 16th August, 1899) was a German chemist. ... The University of Marburg, officially called Philipps-Universität Marburg after its founder, the Landgrave Philipp I of Hesse (usually called the Magnanimous), was founded in 1527 and is the worlds first and oldest Protestant university. ...


In 1851 he visited the Bonn Observatory and studied astronomy under Argelander. In 1853 he was appointed assistant, and in the following year won a doctor's degree with his treatise Nova elementa Thetidis. At Bonn he took an important part in preparing the Durchmusterung of the northern heavens. He took up the investigation of the light-changes in variable stars, devoting to this work nights which, on account of moonlight, were unsuitable for zone observations. The results of these researches are published in the Sitz. Berich. Wien. Akad. vol. xlii. Events January 23 - The flip of a coin determines whether a new city in Oregon is named after Boston, Massachusetts, or Portland, Maine, with Portland winning. ... Friedrich Wilhelm August Argelander (March 22, 1799 – February 17, 1875) was a Prussian astronomer, born in Memel in the Kingdom of Prussia (now Klaipeda in Lithuania), and best known for his work in recording the positions of stars. ... For alternate meanings see star (disambiguation) Hundreds of stars are visible in this image taken by the Hubble Space Telescope of the Sagittarius Star Cloud in the Milky Way Galaxy. ... Moonlight is the light that is perceived as coming from the moon. ...


For a short time he was a Privatdozent at Bonn, but in 1859 he was appointed director of the Mannheim Observatory. The instrumental equipment of that observatory was somewhat antiquated, his largest telescope being a small refractor of 73 lines aperture, but he selected a line of work to suit the instruments at his disposal, observing nebulae and variable stars and keeping a watch on comets and new planets. Privatdozent (PD or Priv. ... The 50 cm refractor at Nice Observatory. ... In photography, the aperture defines the size of the opening in the lens, which in advanced cameras can be adjusted to control the amount of light reaching the film or digital sensor (CCD or CMOS). ...


The results of his observations of nebulae are contained in two catalogues published in the Astronomische Beobachtungen der Grossherzoglichen Sternwarte zu Mannheim, 1st and 2nd parts (1862 and 1875), and those of his variable star observations appeared in the Jahresberichte des Mannheimer Vereins fur Naturkunde, Nos. 32 and 39 (1866 and 1875). On the death of Argelander, which occurred on February 17th 1875, Schönfeld was appointed to succeed him as director of the Bonn Observatory, and soon after his appointment he began his last and greatest piece of work, the extension, on Argelander's plan, of the survey of the heavens down to 23 of south declination. The Triangulum Emission Nebula NGC 604 lies in a spiral arm of Galaxy M33, 2. ... In astronomy declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ...


The experience gained on the northern survey under Argelander's direction enabled Schönfeld to introduce some improvements in the methods employed, which increased the accuracy of this work, which was practically accomplished in March 1881, some revision only remaining to be done. These zone observations afforded 363,932 separate places of stars, and form the groundwork of the catalogue of 133,659 stars between 2 and 23 south declination, which was published in 1886 as the eighth volume of the Bonn observations.


Schonfeld was a member of the Astronomische Gesellschaft from its foundation in 1863, being a member of Council up to 1869, and in 1875 becoming editor of its publications and secretary in conjunction with Winnecke. In 1878 he was elected a Foreign Associate of the Royal Astronomical Society. 1863 is a common year starting on Thursday. ... Friedrich August Theodor Winnecke (February 5, 1835 – December 3, 1897) was a German astronomer. ...


This article incorporates text from the public domain 1911 Encyclopædia Britannica. The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... The Eleventh Edition of the Encyclopædia Britannica (1911) in many ways represents the sum of knowledge at the beginning of the 20th century. ...


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