Michael Philip Candy (1928-1994)
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Historical Earthquakes in Western Australia Kevin Mccue Australian Seismological Centre, Canberra ACT
Historical Earthquakes in Western Australia Kevin McCue Australian Seismological Centre, Canberra ACT. Abstract This paper is a tabulation and description of some earthquakes and tsunamis in Western Australia that occurred before the first modern short-period seismograph installation at Watheroo in 1958. The purpose of investigating these historical earthquakes is to better assess the relative earthquake hazard facing the State than would be obtained using just data from the post–modern instrumental period. This study supplements the earlier extensive historical investigation of Everingham and Tilbury (1972). It was made possible by the Australian National library project, TROVE, to scan and make available on-line Australian newspapers published before 1954. The West Australian newspaper commenced publication in Perth in 1833. Western Australia is rather large with a sparsely distributed population, most of the people live along the coast. When an earthquake is felt in several places it would indicate a larger magnitude than one in say Victoria felt at a similar number of sites. Both large interplate and local intraplate earthquakes are felt in the north-west and sometimes it is difficult to identify the source because not all major historical earthquakes on the plate boundary are tabulated by the ISC or USGS. An earthquake on 29 April 1936 is a good example, local or distant source? An interesting feature of the large earthquakes in WA is their apparent spatial and temporal migration, the latter alluded to by Everingham and Tilbury (1972). One could deduce that the seismicity rate changed before the major earthquake in 1906 offshore the central west coast of WA. -
STANDARD STARS for COMET PHOTOMETRY Wayne Osborn
STANDARD STARS FOR COMET PHOTOMETRY Wayne Osborn Physics Department, Central Michigan University Mt. Pleasant, Michigan 48859, U.S.A. Peter Birch Perth Observatory Bickley, Western Australia 6076, Australia Michael Feierberg Astronomy Program, University of Maryland College Park, Maryland 20742, U.S.A. ABSTRACT. Photoelectric photometry of comets is a feasible and worth- while research program for small telescopes. Nine filters designed to isolate selected emission features and continuum regions in cometary spectra have been adopted by the IAU as those recommended for comet photometry. Magnitudes of standard stars for the IAU filter system have been derived. The results have been compared with previous observations and transformations to place all observations on a common system obtained. 1. INTRODUCTION A profitable research program for small telescopes is the photoelectric monitoring of comets. Because comets appear suddenly and most studies require measurements made over an extended period of time, observations with larger, heavily scheduled instruments are often impossible. Furthermore, comets are extended objects and for projects involving the comet's integrated brightness a small scale is preferable. We have established a system of photoelectric standards intended for comet photometry. 2. COMET PHOTOMETRY Comet photometry can be divided into two types: studies of the continuum and studies of emission lines. Continuum observations are directed toward understanding the dust component of the comet, and ideally only involve measures of reflectivity of the solar spectrum. The emission line studies are concerned with the production of the components of the 313 J. B. Hearnshaw and P. L. Cottrell (eds.), Instrumentation and Research Programmes for Small Telescopes, 313-314. -
Schweifsternen Des Letzten Quartals Mehr Als Zufrieden
Mitteilungsblatt der Heft 173 (34. Jahrgang) ISSN (Online) 2511-1043 Februar 2018 Komet C/2016 R2 (PanSTARRS) am 10. Januar 2018 um 20:26 UT mit einem 12“ f/3,6 ASA Astrograph, RGB 32/12/12 Minuten belichtet mit einer FLI PL16200 CCD-Kamera, Gerald Rhemann Liebe Kometenfreunde, wann gibt es wieder einen hellen Kometen? Fragt man hin und wieder im Internet. Ich dagegen vermisse nichts und bin mit den Schweifsternen des letzten Quartals mehr als zufrieden. Herausheben möchte ich die Schweifdynamik, welche der Komet C/2016 R2 (PanSTARRS) hervorbringt (siehe Titelfoto): Sie wurde von einigen von uns fotografiert, die raschen Veränderungen im Schweif erinnerte nicht nur mich an eine sich drehende Qualle. Michael Jäger und ich werden darüber im VdS-Journal berichten. Viel eindrucksvoller als die dort abgedruckten Fotos sind aber die kleinen Videofilme, die man in unserer Bildergalerie findet. Visuell war davon praktisch nichts zu sehen. Nur in Instrumenten der Halbmeterklasse war überhaupt etwas vom Schweif erkennbar, in meinem 12-Zöller sah ich nur die Koma. Für mich ist dies ein plastischer Nachweis, wie sehr sich die Kometenfotografie entwickelt hat. Einen klaren Himmel wünscht Euer Uwe Pilz. Liebe Leser des Schweifsterns, Die vorliegende Ausgabe des Schweifsterns deckt die Aktivitäten der Fachgruppe Kometen der VdS im Zeitraum vom 01.11.2017 bis zum 31.01.2018 ab. Berücksichtigt wurden alle bis zum Stichtag be- reitgestellten Fotos, Daten und Beiträge (siehe Impressum am Ende des Schweifsterns). Für die einzelnen Kometen lassen sich die Ephemeriden der Kometen auf der Internet-Seite http://www.minorplanetcenter.org/iau/MPEph/MPEph.html errechnen. -
Strategic Plan 2020-2030 Prepared By: Perth Observatory Volunteer Group Inc
PERTH OBSERVATORY VOLUNTEER GROUP Strategic Plan 2020-2030 Prepared by: Perth Observatory Volunteer Group Inc. 337 Walnut Road Bickley, WA, 6076 ABN: 14 565 272 536 [email protected] +61 8 9293 8255 Approved by the Perth Observatory Volunteer Group Inc. Board of Directors at their March/April 2020 meeting Image Credit: Roger Groom Cover page and back cover image credit: Roger Groom | 3 Executive Summary The Perth Observatory is located on crown land and the Our vision is to be recognised as a leading astronomical and infrastructure is owned by the Western Australian State space experience in Australia. Government Department of Biodiversity, Conservation and Attractions. The Perth Observatory Volunteer Group has run Our Mission is to: the Observatory since 2015 through an agreement with the ,Department. ֑ Offer outstanding experiences in astronomy, education nature, culture and tourism run by knowledgeable volunteers This strategic plan presents the direction for the Perth Observatory Build upon our status as the oldest operating scientific ֑ Volunteer Group, in the operations and management of the Perth observatory in Australia through excellent research, Observatory for the coming decade to 2030. As a not-for-profit Science, Technology, Engineering and Mathematics (STEM) and registered charity organisation, our volunteers operate and educational programs, onsite and offsite tours and events manage all aspects of the historical, fully operational astronomical observatory located in Perth, Western Australia, by means of ֑ Conserve and provide access to Perth Observatory’s history donations and income from educational and tourism programs. and heritage collection In addition to providing educational and experiential tours, our volunteers continue to observe the night skies and carry out ֑ Manage and maintain an environmentally sustainable research in partnership with other academic organisations. -
The Lowell Dome and Telescope at Perth Observatory
1,000 Days to First Light Construction of the Perth-Lowell Telescope Facility, 1968-71 Robert G. Hunt 149 St Brigids Terrace, Scarborough, Western Australia, 6019, Australia [email protected] ABSTRACT NASA launched its Viking probes to Mars in late 1975 after establishing an International Planetary Patrol Network of telescopes for planetary observations. Network sites were spread across the globe, and negotiations for a facility at the existing Perth Observatory in Western Australia began in 1968. 1,000 days later the new telescope saw first light. The new facility is unique in design. Inside a dome, the telescope sits atop a 12.8 m pier with wrap-around concrete staircase and supporting legs. This investigation discovered how, at the risk of compromising performance, such a departure from standard observatory design arose, and what the drivers were for the decision- making process. The principal designer was a public servant architect, Mr Tadeusz Andrzejaczek who was said to have made opportunistic design changes, but it seemed improbable he would have had such influence over a scientific installation. Image quality and astronomical seeing was a new science in the 1960s, and structural vibration amelioration was met by designing in massive strength and rigidity. Thermal expansion and wind stresses on the facility were reduced by design features including shade fins and protective walls, and ground thermal disturbance was addressed by subjectively raising the height. Seeing measurements were not a design requirement. The initial design was by Government Astronomer Bertrand Harris, and requests for re-designs came from him, but in close negotiation with Andrzejaczek who desired a structure of futuristic shape and proportions. -
Power, Politics and Personalities in Australian Astronomy: William Ernest Cooke and the Triangulation of the Pacific by Wireless Time Signals
Journal of Astronomical History and Heritage, 22(1), 113Å131 (2019). POWER, POLITICS AND PERSONALITIES IN AUSTRALIAN ASTRONOMY: WILLIAM ERNEST COOKE AND THE TRIANGULATION OF THE PACIFIC BY WIRELESS TIME SIGNALS Ian Tasker University of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia. [email protected] Abstract: In 1916 the New South Wales Government Astronomer, Professor Ernest Cooke, proposed the triangulation of the Pacific by wireless time signals, in order to improve mapping. The world was at war, and this scientific advancement was urgently required. The State Government gave Cooke authority to proceed, but later rescinded this decision. It also prevented Cooke from attending the first International Astronomical Union (IAU) General Assembly in Rome in 1919. Although Cooke became Chairman of the Longitude Committee of the Australian National Research Council in 1922, attended the Pan-Pacific Science Association Congress in 1923, MRLQHG WKH ,$8¶V Commission 18 (Longitude by Wireless) in 1925, and continued to promote triangulation of the Pacific by wireless, the Sydney Observatory Board of Visitors, bureaucrats and politicians all continued to block him. This paper examines the interplay between Federal and State politics in international astronomy, using &RRNH¶V triangulation of the Pacific project as a case study. Keywords: Sydney Observatory, W.E. Cooke, Board of Visitors, triangulation of the Pacific, wireless time signals, State-Federal politics 1 INTRODUCTION presented the same scientific proposal that he Power, politics and personalities often are in- had put forward in 1916, although on this occas- tricately intertwined in science, allowing some ion he gained the public support of visiting inter- scientists continuing success and others contin- national peers and favourable media attention. -
Carte Du Ciel – Mapping the Sky in 18
Photographing the Sky in 1887 - Australia’s Contribution to the Carte du Ciel Project Joanne Tatarynowicz Abstract In 1887 the Paris Observatory initiated a project to map the entire sky using the newly developed dry photography techniques. The ambitious project was an international venture and included eighteen observatories from around the world. Each observatory was designated a section of the sky to systematically photograph with the results eventually being collated into the Astrographic Catalogue (AC). In Australia, the Sydney, Melbourne and Perth Observatories took part. Introduction In 1838, the director of the Paris Observatory, Francois Arago, produced a photograph of the Moon with the photographic pioneer, Louis Daguerre. In January the following year, on Daguerre’s request, Arago formally presented the invention of the daguerrotype to a meeting of the French Academy of Science. From that point, as with photography in general, astronomical photography developed at a fast pace and in 1885 a photograph taken of the Pleiades star cluster by the Henry brothers, Paul and Prosper, inspired the then director of the Paris Observatory, Admiral Ernest Barthelemy Mouchez, to propose that the entire sky should be photographed in the manner the Henry brothers had developed. Sir David Gill, a Scot at the Royal Observatory at the Cape of Good Hope, himself a pioneer in astrophotography, joined with Mouchez in espousing the idea, as did Otto Struve, the Russo- German director of the Poulkovo Observatory. Together, Mouchez, Gill and Struve arranged the “Congrès International de la Carte du Ciel” which took place in Paris in 1887. The result was the launch of the first major international scientific project – the Carte du Ciel, which was to produce the first photographic record of the sky. -
Schweifsterns
Mitteilungsblatt der Heft 170 (33. Jahrgang) ISSN (Online) 2511-1043 Mai 2017 Komet C/2015 ER61 (PanSTARRS) am 07.04.2017 um 03:34 UT mit einem 12“ ASA Astrographen f/3,6 und einer FLI PL16200 CCD-Kamera, Mosaik aus zwei Feldern, je Feld LRGB 12/5/5/5 Minuten belichtet, Gerald Rhemann Liebe Kometenfreunde, ein reizvoller Aspekt der Kometenbeobachtung sind die Überraschungen. In diesem Quartal war es der Komet C/2017 E4 (Lovejoy), der mich besonders beeindruckt hat. Als Entdeckungshelligkeit gab Terry Lovejoy am 9. März 15 mag an: Das war aber eine elektronische Messung, wahrscheinlich war bereits zu diesem Zeitpunkt in mittelgroßen Instrumenten visuell sichtbar. Der Komet nahte dem Perihel und wurde rasch heller. Der Mond störte erst einmal eine Weile, aber danach, Ende März, wurde er von unserer Fachgruppe fotografiert und auch beobachtet. Ungünstig tief am Osthimmel stehend war es die große Helligkeit von 7,5 mag, welche die Beobachtungen erleichterte. Die zum Monatswechsel März/April erstellten Prognosen ließen eine Freisichtigkeit erwarten. Aber es kam anders: Mitte April deute sich ein starker Helligkeitsabfall an. In unseren Breiten störte wieder der Mond, aber zwei Messungen unserer Fachgruppe bestätigten die Berichte: Der Komet schien zu zerfallen. Die letzten Aufnahmen zeigten ei- nen Schweifrest ohne Koma. Auch wenn uns ein heller Komet "entgangen" ist: Diese unerwarteten Ver- änderungen, welche sich ja in diesem Fall recht einfach beobachten ließen, sind das Salz in der Suppe von uns Kometenastronomen. Einen klaren Himmel wünscht euer Uwe Pilz. Liebe Leser des Schweifsterns, Die vorliegende Ausgabe des Schweifsterns deckt die Aktivitäten der Fachgruppe Kometen der VdS im Zeitraum vom 01.02.2017 bis zum 30.04.2017 ab. -
080052-31.015.Pdf
Gazing upwards, moving forwards by Matthew Woods, Roger Groom, Greg Lowe and Rhianna King For more than 119 years, the Perth Observatory has provided a gateway to the galaxy for awed school students, a community of amateur star gazers, and local and visiting professional astronomers. It has also contributed valuable information to international collaborations and made some exciting discoveries. A new partnership agreement between Parks and Wildlife and an active and passionate group of volunteers marks a new chapter for this amazing facility and the future of astronomy in Western Australia. Previous page he stars, planets and galaxies that Main Domes at the Observatory house light up our sky have enchanted powerful telescopes. Tand interested people for millennia. Photo – Roger Groom What we now term ‘astronomy’ – the Above left The Observatory can be visited study of celestial objects – was undertaken during the day for tours as well as at night. first by Aboriginal people who used Photo – Matthew Woods stories to interpret tides, eclipses, and ● astronomical events such as comets and Perth Observatory Above William Ernest Cooke, Western meteors. They also used the changing Australia’s first Government Astronomer. Photo – Perth Observatory positions of stars and planets, and the rising and setting times of the sun and moon, to help interpret the seasons and guide what foods were available and when, and to determine when certain animals were Darling Range, 35km east of the city and The Meridian Transit Circle Telescope more likely to be caught. Astronomy also 380m above sea level where light pollution was used to accurately determine Perth’s played a profound role in Greek mythology that hindered star viewing was reduced. -
Making Visible the First Women in Astronomy in Australia: the Measurers and Computers Employed for the Astrographic Catalogue
Publications of the Astronomical Society of Australia (PASA), Vol. 31, e018, 10 pages (2014). C Astronomical Society of Australia 2014; published by Cambridge University Press. doi:10.1017/pasa.2014.12 Making Visible the First Women in Astronomy in Australia: The Measurers and Computers Employed for the Astrographic Catalogue T. Stevenson1,2,3 1Museum Studies Department, Faculty of Arts, The University of Sydney, Sydney, NSW 2006, Australia 2Sydney Observatory, Museum of Applied Arts and Sciences, 1003 Upper Fort Street Millers Point, Sydney, NSW 2000, Australia. 3Email: [email protected] (Received October 07, 2013; Accepted February 14, 2014) Abstract In Australia a significant number of women were employed to measure and compute the position of stars for the Astrographic Catalogue at Adelaide, Sydney, Melbourne and Perth Observatories. New archival research has provided evidence that the first women employed in astronomy in Australia were engaged due to this project. This paper focuses on Mary Emma Greayer, who was employed as a computer at Adelaide Observatory from 1890, and Charlotte Emily Fforde Peel, employed as a star measurer, computer and astrographic assistant at Melbourne Observatory from 1898. The measurement bureaux at Melbourne, Perth and Sydney Observatories are examined within the context of women working on the Astrographic Catalogue in other observatories during the late nineteenth century. Evidence is presented that individuals, such as Greayer and Peel, were vital to the completion of the Astrographic Catalogue and other astronomical work. Furthermore, it is argued that this evidence points to women having a broader role and greater agency within observatories in Australia and in astronomy than has previously been acknowledged. -
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DIRECTOR'S MESSAGE The Department of Environment and Conservation’s (DEC’s) policies and operations need to be underpinned by the incorporation of up-to-date knowledge. The Science Division is DEC’s prime source of new conservation biology knowledge and information based on scientific research. With about 166 scientific, technical and administration staff, (excluding Perth Observatory staff) the division is the largest and most scientifically diverse group of conservation scientists in Western Australia. The Perth Observatory (10 staff), a program within the Science Division, focuses on delivering astronomy services in the areas of research, information and education. The conservation and land management work of the division reflects a significant investment by the State Government, through DEC, in multi-disciplinary biodiversity conservation research, monitoring and biological survey, and this year we formed the Biodiversity and Climate Change Unit (see page 59) to address an important emerging issue. Science, operational research and active adaptive management The Science Division carries out activities that deliver on-ground conservation and land management outcomes as well as generating new knowledge. The pie chart below shows that ~33% of the division’s staff time (F.T.Es) is committed to biological survey, taxonomy and plant collections management. These activities are fundamental to the mission of a conservation and land management agency such as DEC – if we don’t know what we have, where it is, why it is where it is and what condition it’s in, we can’t begin to manage it. A further 29% of staff time is committed to understanding landscape-scale ecosystem processes such as fire, introduced/feral animals/plants, altered hydrology, genetics, climate change, pests and diseases and timber harvesting. -
Historical & Cultural Astronomy
Historical & Cultural Astronomy More information about this series at http://www.springer.com/series/15156 Wayne Orchiston John Tebbutt Rebuilding and Strengthening the Foundations of Australian Astronomy Wayne Orchiston National Astronomical Research Institute of Thailand Suthep District, Muang , Chiang Mai , Thailand ISSN 2509-310X ISSN 2509-3118 (electronic) Historical & Cultural Astronomy ISBN 978-3-319-44520-5 ISBN 978-3-319-44521-2 (eBook) DOI 10.1007/978-3-319-44521-2 Library of Congress Control Number: 2016953048 © Springer International Publishing Switzerland 2017 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifi cally the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfi lms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specifi c statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Printed on acid-free paper This Springer imprint is published by Springer Nature The registered company is Springer International Publishing AG The registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland Foreword Astronomy is still one of the very few sciences in which independent astronomers can play a valuable role and in which their work is welcomed by professional astronomers.