SRON (Netherlands Institute for Space Research) is developing the focal plane assembly (FPA) for Athena X-IFU, whose demonstration model (DM) will use for the first time a time domain multiplexing ...(TDM)-based readout system for the on-board transition-edge sensors (TES). We report on the characterization activities on a TDM setup provided by NASA goddard space flight center (GSFC) and national institute for standards and technology (NIST) and tested in SRON cryogenic test facilities. The goal of these activities is to study the impact of the longer harness, closer to X-IFU specs, in a different EMI environment and switching from a single-ended to a differential readout scheme. In this contribution we describe the advancement in the debugging of the system in the SRON cryostat, which led to the demonstration of the nominal spectral performance of 2.8 eV at 5.9 keV with 16-row multiplexing, as well as an outlook for the future endeavors for the TDM readout integration on X-IFU’s FPA-DM at SRON.
Heveliana 2011–2016 Targosz, Karolina
Prace Komisji Historii Nauki (Polska Akademia Umiejętności),
12/2017, Letnik:
16, Številka:
16(2017)
Journal Article
Recenzirano
Odprti dostop
A number of publications devoted to Jan Heweliusz have been published between 2011 and 2016. On the occasion of the 400th anniversary of his birthday celebrated in 2011, four books have been ...published gathering the conferences and lectures, with a great deal of foreign authors presenting various aspects of the Gdańsk astronomer’s activities and achievements. In 2014, the publishing of Hevelius’s correspondence was initiated with the volume Prologomena.
This article critically discusses the mentioned publications, pointing out their advantages and shortcomings.
The preliminary study of the volume by Chantal Grell was also published in a Polish translation as a separate book. The author has indeed – more precisely than her predecessors – presented the years of Hevelius’s studies and the network of his correspondents, however overly emphasized his polemics with the French and English scholars. Her final conclusion, qualifying Hevelius as an amateur isolated from the leading currents of the seventeenth century, is contradictory to the evidence of his correspondence, which will be published over the next years.
Giuseppe Campani, "Inventor Romae," an Uncommon Genius offers an account of the life and creations of the most talented maker of optic lenses, silent clocks and projector clocks of the second half of ...the seventeenth century but also provides you with unique insights into the scientific and technological landscape of baroque Rome and its links to a broader European scene.
Einstein's Juryis the dramatic story of how astronomers in Germany, England, and America competed to test Einstein's developing theory of relativity. Weaving a rich narrative based on extensive ...archival research, Jeffrey Crelinsten shows how these early scientific debates shaped cultural attitudes we hold today.
The book examines Einstein's theory of general relativity through the eyes of astronomers, many of whom were not convinced of the legitimacy of Einstein's startling breakthrough. These were individuals with international reputations to uphold and benefactors and shareholders to please, yet few of them understood the new theory coming from the pen of Germany's up-and-coming theoretical physicist, Albert Einstein. Some tried to test his theory early in its development but got no results. Others--through toil and hardship, great expense, and perseverance--concluded that it was wrong.
A tale of international competition and intrigue,Einstein's Jurybrims with detail gleaned from Crelinsten's far-reaching inquiry into the history and development of relativity. Crelinsten concludes that the well-known British eclipse expedition of 1919 that made Einstein famous had less to do with the scientific acceptance of his theory than with his burgeoning public fame. It was not until the 1920s, when the center of gravity of astronomy and physics shifted from Europe to America, that the work of prestigious American observatories legitimized Einstein's work. As Crelinsten so expertly shows, the glow that now surrounds the famous scientist had its beginnings in these early debates among professional scientists working in the glare of the public spotlight.
Fifty Years of Quasars D'Onofrio, Mauro; Marziani, Paola; Sulentic, Jack W
2012, 20120424, 2012-06-30, Letnik:
386
eBook
The 50th anniversary of the discovery of quasars in 1963 presents an interesting opportunity to ask questions about the current state of quasar research. Formatted as a series of interviews with ...noted researchers in the field, each of them asked to address a specific set of questions covering topics selected by the editors, this book deals with the historical development of quasar research and discusses how advances in instrumentation and computational capabilities have benefitted quasar astronomy and have changed our basic understanding of quasars. In the last part of the book the interviews address the current topic of the role of quasars in galaxy evolution. They summarise open issues in understanding active galactic nuclei and quasars and present an outlook regarding what future observational facilities both on the ground and in space might reveal.Its interview format, the fascinating topic of quasars and black holes, and the lively recollections and at times controversial views of the contributors make this book both rewarding and a pleasure to read!
Provider: - Institution: - Data provided by Europeana Collections- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain ...Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
The Biographical Encyclopedia of Astronomers is a unique and valuable resource for historians and astronomers alike. The two volumes include approximately 1550 biographical sketches on astronomers ...from antiquity to modern times. It is the collective work of about 400 authors edited by an editorial board of 9 historians and astronomers, and provides additional details on the nature of an entry and some summary statistics on the content of entries. This new reference provides biographical information on astronomers and cosmologists by utilizing contemporary historical scholarship.Individual entries vary from 100 to 1500 words, including the likes of the superluminaries such as Newton and Einstein, as well as lesser-known astronomers like Galileo's acolyte, Mario Guiducci.A comprehensive contributor index helps researchers to identify the authors of important scientific topics and treatises.
Provider: - Institution: - Data provided by Europeana Collections- Porträt von Wilhelm Herschel. Der in Deutschland geborene Astronom und Musiker ist hier als Brustbild im Profil nach rechts ...wiedergegeben. Sein Blick ist auf den rechten Blattrand gerichtet. Statt einer Perücke trägt er schütteres Haar. Er trägt eine Art Mantelumhang. Das Bildnis ist rechteckig gerahmt.
Wilhelm Herschels Vater war Militärmusiker. Daher trat auch sein Sohn Wilhelm zunächst als Oboist und Violinist der Fußgarde bei. Bei Ausbruch des Siebenjährigen Krieges wurde sein Regiment nach England verlegt. So konnte er London bereisen und kurze Zeit als Notenkopist arbeiten. Er verlegte sich dann Anfang der 1760er Jahre nach Bath, wo er ins Orchester eintrat, das zu dieser Zeit zu den besten Englands zählte, und bald Leiter dessen wurde. So hatte er Gastauftritte am Theatre Royal in Bristol und leitete die Oratorien während der Fastenzeit. Er schrieb in der Zeit auch einige größere Kompositionen und seine Schwester sang auf seinen Konzerten. Für seine späteren astronomischen Tätigkeiten wurde er 1793 in die Leopoldina in Halle aufgenommen.
Das Blatt wurde wahrscheinlich von dem in Steinlah geborenen Kupferstecher Friedrich Theodor Müller (1797-) als Stahlstich ausgeführt. Alle anderen Sammlungen geben stets nur einen um 1828 tätigen Fr. Müller an. Auch bei den Datierungen wird sich schwer getan. Da es einen sehr viel bekannteren Punktierstich von James Godby (1790-1815) von 1814 gibt und dem vorliegenden Blatt sehr ähnlich sieht, wird das vorliegende Blatt zwischen 1814 und 1825 eingeordnet. Müller nutzte jedenfalls eine Vorlage von dem deutschen Maler und Lithographen Friedrich Rehberg (1758-1835). Weitere Exemplare des Blattes befinden sich in der Staatsbibliothek zu Berlin und in der Österreichischen Nationalbibliothek in Wien.
Signatur: Gemahlt von Fr. Rehberg. Gestochen von Fr. Müller.
Beschriftung: WILH. HERSCHEL. (Stiftung Händel-Haus Halle)- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Illustrationszyklus Naturwissenschaft/Bildinitiale P- All metadata published by Europeana are available free of restriction under ...the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Illustrationszyklus Naturwissenschaft/Bildinitiale T- All metadata published by Europeana are available free of restriction under ...the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
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