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Thèses sur le sujet « Astronomical instruments »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 25 juillet 2025

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1

饒勇 and Yong Rao. "The astronomical observation system of 12" telescope: its automatic control system and astronomical application." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31214587.

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Cochrane, William Andrew. "The design and characterisation of miniature robotics for astronomical instruments." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/2916.

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Micro robotics has the potential to improve the efficiency and reduce cost of future multi-object instruments for astronomy. This thesis reports on the development and evolution of a micro autonomous pick-off mirror called the Micro Autonomous Positioning System (MAPS) that can be used in a multi-object spectrograph. The design of these micro-autonomous pick-off mirrors is novel as they are capable of high precision positioning using electromagnetic propulsion through utilising non-conventional components and techniques. These devices are self-driven robotic units, which with the help of an ex
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3

Porter, Martin John. "A CCD camera system for use in echelle spectroscopy /." St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17953.pdf.

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4

Brooks, Randall Chapman. "The precision screw in scientific instruments of the 17th-19th centuries : with particular reference to astronomical, nautical and surveying instruments." Thesis, University of Leicester, 1989. http://hdl.handle.net/2381/8446.

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Published articles have been removed from the Appendices of the electronic copy of this thesis due to third party copyright restrictions. The complete version can be consulted at the University of Leicester Library.
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5

MacLachlan, David Guillaume. "Development of photonic technologies for astronomical instruments using ultrafast laser inscription." Thesis, Heriot-Watt University, 2017. http://hdl.handle.net/10399/3281.

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Recently there has been a desire to apply photonic concepts and technologies to astronomical applications, with the aim of replacing traditional bulk optic instruments. This astrophotonic approach is envisioned to produce compact devices that have the potential to provide the unprecedented precision and stability required for current astronomical goals, such as the detection of Earth-like exoplanets capable of supporting life. The work in this thesis covers the investigation of the technique of Ultrafast Laser Inscription (ULI) to create the building blocks that may lead to a fully integrated
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McGee, P. K. "Optical studies in high-energy astrophysics /." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phm14485.pdf.

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7

Saklatvala, George. "A functional approach to the analysis of millimetre wave and infrared astronomical instruments." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611293.

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Kenyon, Suzanne Laura Physics Faculty of Science UNSW. "A universe of sky and snow: site-testing for optical astronomy at Dome C, Antarctica." Awarded by:University of New South Wales. Physics, 2007. http://handle.unsw.edu.au/1959.4/40822.

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The unique advantages for astronomy on the Antarctic plateau are now well established. In particular, Dome C, Antarctica is potentially one of the best new sites for optical, infrared and sub-millimeter astronomy, presenting the opportunity to build unique astronomical instruments. Located high on the Antarctic plateau, Dome C offers low wind, clear skies, and negligible precipitation. This thesis addresses three additional properties of the site relevant to optical astronomy-sky brightness, atmospheric extinction and optical turbulence. The sky at an optical astronomy site must be dark, and
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9

Bilāl, Muḥammad Luʼī Ṣūfī ʻAbd al-Raḥmān ibn ʻUmar. "al-Asṭrūlāb fī al-turāth al-ʻilmī al-ʻArabī risālah fī al-ʻamal bi-al-asṭrūlāb li-ʻAbd al-Raḥmān al-Ṣūfī /". [Aleppo] : Jāmiʻat Ḥalab, Maʻhad al-Turāth al-ʻIlmī al-ʻArabī, 1994. http://books.google.com/books?id=K8_aAAAAMAAJ.

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10

Robinson, Matthew. "Development of planar technology for focal planes of future radio to sub-millimetre astronomical instruments." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/development-of-planar-technology-for-focal-planes-of-future-radio-to-submillimetre-astronomical-instruments(dd2876aa-ff1a-4ae7-903f-a8228f3fc85f).html.

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Receiver systems utilising planar technologies are prevalent in telescopes observing at radio to sub-millimetre wavelengths. Receiver components using planar technologies are generally smaller, have reduced mass and are cheaper to manufacture than waveguide-based alternatives. Given that modern-day detectors are capable of reaching the fundamental photon noise limit, increases in the sensitivity of telescopes are frequently attained by increasing the total number of detectors in the receivers. The development of components utilising planar technologies facilitates the demand for large numbers
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11

Ren, Deqing. "New techniques of multiple integral field spectroscopy." Thesis, Durham University, 2001. http://etheses.dur.ac.uk/3800/.

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The work of this thesis is to investigate new techniques for Integral Field Spectroscopy (IPS) to make the most efficient use of modem large telescopes. Most of the work described is aimed at the FMOS for the SUBARU 8m telescope. Although this is primarily a system for Multiple Object Spectroscopy (MOS) employing single fibres, there is an option to include a multiple-IFS (MIPS) system. Much of this thesis is therefore aimed at the design and prototyping of critical systems for both the IPS and MOS modes of this instrument. The basic theory of IFU design is discussed first. Some particular pro
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12

Bounissou, Sophie. "”On-chip” astronomical instrumentation : bringing polarimetric and spectroscopic capabilities to the detector level." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS400.

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Cette thèse étudie la possibilité d'intégrer plusieurs fonctions instrumentales au sein de la matrice de bolomètres pour les observations dans le domaine du sub-millimétrique. Ceci est désormais envisageable grâce aux progrès des micro-technologies.Dans un premier temps, nous avons optimisé le design des pixels polarimétriques inventés pour l'instrument B-BOP du futur observatoire spatial SPICA. Ce travail a notamment permis de quantifier la cross-polarisation (1/1000) et de repenser la géométrie des pixels afin d'obtenir des détecteurs mieux adaptés au rayonnement incident.Cette thèse a égale
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13

Saridakis, Voula. "Scientific controversy and the new astronomy: the intellectual and social contexts of the Hevelius-Hooke dispute." Thesis, Virginia Tech, 1993. http://hdl.handle.net/10919/45615.

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During the seventeenth century, science, and especially astronomy, underwent significant changes in which the emphasis on instrumentation shifted from a more qualitative approach to precise quantitative measurement. These changes were further encouraged by the formation of scientific societies, such as the Royal Society in London and the Royal Academy of Sciences in Paris, where members worked together as a collective to validate knowledge. Because members could freely dissent within the community, a prescribed behavior for participants in disputes was proposed, although seldom followed. Furth
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14

Saridakis, Voula. "Scientific controversy and the new astronomy : the intellectural and social contexts of the Hevelius-Hooke dispute /." This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-11102009-020225/.

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15

Copley, Charles Judd. "Temperature dependence of the HartRAO pointing model." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1005277.

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This thesis investigates control aspects of the Hartebeeshoek Radio Astronomy Observatory (HartRAO) antenna. The installation of a new 22 GHz receiver has required the pointing accuracy to be improved to less than 4 mdeg. The effect of thermal conditions on the the HartRAO antenna pointing offset is investigated using a variety of modelling techniques including simple geometric modelling, neural networks and Principal Component Analysis (PCA). Convincing results were obtained for the Declination pointing offset, where applying certain model predictions to observations resulted in an improvemen
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16

Carter, DB. "Automation of the acquisition system of the 1,9 m telescope for the charge coupled device (CCD) camera." Thesis, Cape Technikon, 1988. http://hdl.handle.net/20.500.11838/1075.

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Thesis (Master Diploma (Electrical Engineering))-- Cape Technikon, Cape Town, 1988<br>This thesis describes the control system developed to improve the efficiency of star acquisition on a ground-based optical telescope. "Star Acquisition" refers to the process of identifying the star of interest in a field of stars and centering it on the optical axis of the telescope , as well as setting an autoguider detector on a suitable star so the autoguider can improve the tracking performance of the telescope. Efficiency is improved by making all functions remote controlled , so the astronomer do
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17

Youthed, Andrew David. "Designing and implementing a new pulsar timer for the Hartebeesthoek Radio Astronomy Observatory." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1005243.

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This thesis outlines the design and implementation of a single channel, dual polarization pulsar timing instrument for the Hartebeesthoek Radio Astronomy Observatory (HartRAO). The new timer is designed to be an improved, temporary replacement for the existing device which has been in operation for over 20 years. The existing device is no longer reliable and is di±cult to maintain. The new pulsar timer is designed to provide improved functional- ity, higher sampling speed, greater pulse resolution, more °exibility and easier maintenance over the existing device. The new device is also designed
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18

Laag, Edward Aric. "Observations of starburst galaxies science and supporting technology /." Diss., [Riverside, Calif.] : University of California, Riverside, 2009. http://proquest.umi.com/pqdweb?index=0&did=1957320791&SrchMode=2&sid=2&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1268854875&clientId=48051.

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Thesis (Ph. D.)--University of California, Riverside, 2009.<br>Includes abstract. Available via ProQuest Digital Dissertations. Title from first page of PDF file (viewed March 16, 2010). Includes bibliographical references. Also issued in print.
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19

Pollard, Lloyd Wayne 1936. "Design of a flexure mount for optics in dynamic and cryogenic environments." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276741.

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The design of the flexure mount recently submitted to NASA Ames for the structural support of the primary mirror of the Space Infrared Telescope Facility (SIRTF) is presented. The flexure system must passively accommodate the differential thermal contraction between the glass mirror and the aluminum structure of the telescope during cryogenic cooldown. Further, it must support the one meter diameter, 116 kilogram (258 pound) primary mirror during a severe launch to orbit. Procedures used to establish the required radial compliance using computer programs NASTRAN and FRINGE are discussed. The p
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20

Braun, Stephanie Eva. ""Strange machines" from the West: European curiosities at the Qing imperial courts, 1644-1796." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B4598752X.

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21

Molina, Moreno Rocío Gabriela. "Design of optical systems for W-Band astronomical heterodyne cameras." Tesis, Universidad de Chile, 2017. http://repositorio.uchile.cl/handle/2250/145310.

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Magíster en Ciencias de la Ingeniería, Mención Eléctrica. Ingeniera Civil Eléctrica<br>The new generation of telescopes that will be installed in the world and particularly in Chile is focused on the search of high-impact scientific objectives. For this, the technology used must be cutting edge, in order to achieve a better performance than currently achieved. This challenge falls into the hands of engineering and this thesis is developed in that context. The general objective is to develop intermediate optical systems to allow the existence of heterodyne cameras in the range of 85 - 115 GHz
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22

Divoux, Claire. "Réseaux de microbobines planaires et membranes magnétiques déformables : application à l'optique adaptative." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0105.

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Cette thèse a été menée dans le domaine des microsystèmes magnétiques. Des actionneurs magnétiques de type réseaux de bobines planaires de champ sont conçus, simulés et caractérisés. Les microtechnologies utilisées et développées permettent une miniaturisation poussée et une fabrication collective. La fonction de ces bobines est d'exercer les forces locales nécessaires au contrôle de la déformation de membranes magnétiques souples. Des membranes polymères de diamètre 40 mm sont élaborées sur substrat et les composants aimantés sont collés en vis à vis avec les bobines. L'application étudiée es
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23

Lee, David. "New techniques in astronomical spectroscopy for 8-m telescopes." Thesis, Durham University, 1998. http://etheses.dur.ac.uk/4847/.

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The purpose of this thesis is to investigate new instrument technology to enhance the capabilities of 8-m telescopes. This thesis first describes the theory, design, construction, and testing of an immersed grating. Immersed gratings can be used to provide R≥ 10(^4) with a multi-object and/or integral field spectrograph on an 8-m telescope. Immersed gratings allow high resolution to be achieved whilst maintaining the required pupil size at a level similar to that on 4-m telescopes. This thesis describes laboratory tests which verify that immersed gratings provide high resolution. The throughpu
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24

Staubermann, Klaus. "Astronomers at work : a study of the replicability of 19th century astronomical practice /." Frankfurt, M. : Deutsch, 1998. http://d-nb.info/985198958/04.

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25

Mate, Sujay. "Développement d'un simulateur du ciel pour les instruments à grand champ de vue X-gamma en orbite terrestre basse : application à l'évaluation des performances du spectro-imageur SVOM-ECLAIRs." Thesis, Toulouse 3, 2021. http://www.theses.fr/2021TOU30031.

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Les sursauts gamma (Gamma-Ray Bursts ou GRBs) sont les explosions les plus lumineuses de l'univers. On les observe sous la forme de bouffées de rayons X/ƴ (d'une durée de quelques millisecondes à quelques dizaines de secondes) suivies d'une émission rémanente (généralement à de plus grandes longueurs d'onde). Ils résultent soit de la fusion de deux objets compacts (une paire d'étoiles à neutrons ou une étoile à neutrons et un trou noir), soit de l'effondrement du noyau d'une étoile massive (&gt;15 masse solaire). Les GRBs sont d'excellents candidats pour étudier la physique aux énergies et den
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26

Berger, Jean-Philippe. "Interférométrie et formation stellaire : Perspectives pour une instrumentation en optique intégrée." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10213.

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Je présente les premières observations infrarouges des étoile FU Ori et AB Aur obtenues avec les interféromètres longue base IOTA(Umass, SAO) et PTI (JPL/NASA). Ces deux étoiles sont des prototypes des étoiles pré-séquence principale de faible masse (FU Ori) et de masse intermédiaire (AB Aur). Les deux sources sont résolues avec une résolution de l'ordre de l'unité astronomique. Divers scénarios sont envisagés. Les observations sont tout à fait compatibles avec la présence d'un disque d'accrétion autour de FU Ori. Afin d'améliorer les performances scientifiques et de diminuer la complexité des
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27

Welsh, Frederick V. "Scientific application of the Santa Barbara instrument group self-guided spectrograph." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1295146.

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The Santa Barbara Instrument Group self-guided spectrograph is aimed primarily at the advanced amateur astronomer. This study has determined that this instrument is capable of being used for scientific research. A comparison lamp box was built to be used in conjunction with the spectrograph. A test was conducted to determine the accuracy of the grating positioning micrometer. A chart was created to allow the conversion of the micrometer readings to correlate with the position of the low-dispersion grating. To determine the scientific applicability of the spectrograph, it was used to: (1) measu
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28

Marques, Leonardo Soares. "Apropriação e domínio de instrumentos para o ensino de Astronomia." Universidade Federal de Minas Gerais, 2010. http://hdl.handle.net/1843/FAEC-8GGMK6.

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ABSTRACT The present research sought information on how teachers appropriate and create their dominion over the instruments of the KIT FOR THE TEACHING OF ASTRONOMY (KITPEA). The subjects of this study were teachers who attended the course on astronomy education offered by the Continuing Education Project (FoCo) at the Center for Teaching Science and Mathematics (CECIMIG), Faculty of Education, Federal University of Minas Gerais (FAE / UFMG ). We have collected data through a questionnaire and an interview with these teachers. We structured the data analysis with the help of Activity Theory a
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Soares, Leonardo Marques. "Apropriação e domínio de instrumentos para o ensino de astronomia." Universidade Federal de Minas Gerais, 2010. http://hdl.handle.net/1843/BUDB-8C6PET.

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The present research sought information on how teachers appropriate and create their dominion over the instruments of the KIT FOR THE TEACHING OF ASTRONOMY (KITPEA). The subjects of this study were teachers who attended the course on astronomy education offered by the Continuing Education Project (FoCo) at the Center for Teaching Science and Mathematics (CECIMIG), Faculty of Education, Federal University of Minas Gerais (FAE / UFMG ). We have collected data through a questionnaire and an interview with these teachers. We structured the data analysis with the help of Activity Theory and the The
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Perez, Everton Piza [UNESP]. "Caixa experimentoteca: uma proposta para o ensino de astronomia." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/136053.

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Made available in DSpace on 2016-03-07T19:21:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-12-02. Added 1 bitstream(s) on 2016-03-07T19:24:55Z : No. of bitstreams: 1 000857808.pdf: 1904764 bytes, checksum: d01be9c9d01ac82af8b73da25d03b4b6 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A visão de um céu estrelado numa noite límpida tem fascinado a Humanidade desde os tempos pré-históricos. O homem começou a fazer ciência a partir do momento em que se perguntou o que eram as estrelas e porque estavam ali, desenhando a aparência do céu e tentando p
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Perez, Everton Piza. "Caixa experimentoteca : uma proposta para o ensino de astronomia /." Presidente Prudente, 2015. http://hdl.handle.net/11449/136053.

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Orientador: Angel Fidel Vilche Peña<br>Banca: Celso Xavier Cardoso<br>Banca: Agda Eunice de Souza Albas<br>Banca: Renivaldo José dos Santos<br>Resumo: A visão de um céu estrelado numa noite límpida tem fascinado a Humanidade desde os tempos pré-históricos. O homem começou a "fazer ciência" a partir do momento em que se perguntou o que eram as estrelas e porque estavam ali, desenhando a aparência do céu e tentando predizer os fenômenos celestes. A partir do momento em que Galileu apontou sua luneta para o céu, iniciou-se uma estreita relação entre a evolução dos instrumentos astronômicos, a tec
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Patti, Mauro <1989&gt. "MAORY: wavefront sensor prototype and instrument optical design." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8534/1/Mauro_Patti.pdf.

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MAORY will be the multi-conjugate adaptive optics module for the ELT first light. Its main goal is to feed the high-resolution NIR imager and spectrograph MICADO. The present Thesis address the MAORY system at the level of optical design and analysis. MAORY is a complex science projects whose stakeholder is the scientific community. Its requirements are driven by the science cases which request high resolution and astrometric accuracy. In an ideal world without atmospheric turbulence, MAORY optics must deliver diffraction-limited images with very low optical distortions. The tolerance pro
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Silva, Denilton Machado da. "A prática da astronomia em aulas no formato de oficinas e suas aplicações na modalidade de ensino EAD /." Presidente Prudente, 2016. http://hdl.handle.net/11449/149985.

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Orientador: Cláudio Luiz Carvalho<br>Banca: Fernanda Catia Bozelli<br>Banca: Hermes Adolfo de Aquino<br>Resumo: De acordo com pesquisas em ensino de ciências, nos últimos tempos, os alunos de forma geral, não compreendem e não desenvolvem as tarefas sobre os conceitos básicos de ciências, como por exemplo, relacionar um tema de Física com os acontecimentos rotineiros do dia a dia, assim como relacioná-lo com a Química ou Geografia. Uma possível hipótese está no fato de que o ambiente escolar frequentado pelos alunos, atualmente, está desconexo com os interesses e curiosidades que eles possuem
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Wang, Haobing. "Optical Fibre Characterisation for the new-generation instrument - Hector." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29988.

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Australia has been the world leader in astrophotonic developments, led by the SAIL/Astralis-USyd labs at The University of Sydney. A new, novel optical fibre imaging device, called a ‘Hexabundle’ was invented by a team in the SAIL/Astralis-USyd labs and was implemented in an integral field spectrograph instrument called ‘SAMI’ on the Anglo-Australian Telescope (AAT). Based on the success of SAMI, an innovative new $7m instrument called Hector has now been built and is currently being commissioned on the AAT. Hector has new upgraded hexabundles, positioners and spectrographs. It will now tackle
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Zonca, A. "Advanced modelling and combined data analysis of Planck focal plane instruments." Doctoral thesis, Università degli Studi di Milano, 2009. http://hdl.handle.net/2434/64581.

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The main topic of my PhD work is the software modelling of the ESA Planck Low Frequency Instrument (LFI) radiometers. The software model, implemented in QUCS, relies on measured frequency response of the LFI radiometers components and on an analytical waveguide simulator in order to simulate the LFI bandpasses channel by channel. Modelled bandpasses showed good consistency with the measured performance and suffered less systematic effects, they are therefore the best estimate available for the radiometers frequency response. Thanks to the collaboration with Jean-Michel Lamarre, HFI Instrum
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36

Daigle, Olivier. "Spectro-imagerie optique à faible flux et comparaison de la cinématique Hα et HI d'un échantillon de galaxies proches". Aix-Marseille 1, 2010. http://www.theses.fr/2010AIX10141.

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Un nouveau contrôleur de EMCCD (Electron multiplying Charge Coupled Device) est présenté. Il permet de diminuer significativement le bruit qui domine lorsque la puce EMCCD est utilisé pour du comptage de photons: le bruit d'injection de charge. À l'aide de ce contrôleur, une caméra EMCCD scientifique a été construite, caractérisée en laboratoire et testée à l'observatoire du mont Mégantic. Cette nouvelle caméra permet, entre autres, de réaliser des observations de la cinématique des galaxies par spectroscopie de champ intégral par interférométrie de Fabry-Perot en lumière Ha beaucoup plus rapi
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Souza, Thauane Lima de. "O uso de v?deo e jogo educativos como instrumento de ensino e divulga??o da Astronomia." Universidade Estadual de Feira de Santana, 2016. http://localhost:8080/tede/handle/tede/465.

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Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2017-03-30T21:29:02Z No. of bitstreams: 1 DISSERTACAO THAUANE-FINAL (3).pdf: 2270065 bytes, checksum: 57e7cc71a5309821de988ba9e5addcf8 (MD5)<br>Made available in DSpace on 2017-03-30T21:29:02Z (GMT). No. of bitstreams: 1 DISSERTACAO THAUANE-FINAL (3).pdf: 2270065 bytes, checksum: 57e7cc71a5309821de988ba9e5addcf8 (MD5) Previous issue date: 2016-12-21<br>Currently, due to the various technological options, the vast access to information and the demotivation of some students, much is discussed in the literature abou
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Schmitt, César Eduardo. "O uso da astronomia como instrumento para a introdução ao estudo das radiações eletromagnéticas no ensino médio." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/7541.

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Este trabalho relata a utilização de tópicos ligados à Astronomia, como motivação educacional, a fim de inserir o estudo das radiações eletromagnéticas com abordagem na Física Moderna e Contemporânea. Em geral, a bibliografia atual disponível trata deste assunto (sob o título “ondas eletromagnéticas”) no capítulo relacionado a “ondas”, dentro da Física Clássica, não abordando assim, conceitos da Física Moderna: dualidade onda partícula, quantização da energia, efeito fotoelétrico, Lei de Planck, etc. O tema foi abordado utilizando atividades práticas: observação do Sol, observação do céu com t
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Moura, Pedro Macário de. "Astronomia e o ensino de física e de matemática no Ensino Médio em uma escola pública de Petrolina-PE." reponame:Repositório Institucional da UNIVATES, 2016. http://hdl.handle.net/10737/1721.

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Submitted by FERNANDA DA SILVA VON PORSTER (fdsvporster@univates.br) on 2018-01-05T11:25:39Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) 2016PedroMacariodeMoura.pdf: 2444818 bytes, checksum: 8cc5fec70718e2dc595e9ec55af2b7a2 (MD5)<br>Approved for entry into archive by Ana Paula Lisboa Monteiro (monteiro@univates.br) on 2018-01-05T19:16:29Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) 2016PedroMacariodeMoura.pdf: 2444818 bytes, checksum: 8cc5fec70718e2dc595e9ec55af2b7a2 (MD5)<br>Made available in
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Nguyen, Khanh Linh. "Mesures optiques de profils de turbulence pour les futurs systèmes d'optique adaptative et d'observation." Thesis, Université Côte d'Azur (ComUE), 2018. http://www.theses.fr/2018AZUR4242/document.

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La connaissance de la turbulence atmosphérique en visée horizontale permet de mieux appréhender la physique des flux de chaleur à l’interface sol-atmosphère. Elle permet également, en visée verticale, d’améliorer les performances des futurs systèmes d’optique adaptative grand-champ pour l’observation astronomique. Le profil de Cn² caractérise localement la force de la turbulence. La méthode CO-SLIDAR, développée par l’ONERA, permet de réaliser des profils de Cn² le long de la ligne de visée du télescope à partir des pentes et de scintillations mesurées par un Analyseur de Shack-Hartmann sur so
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CAPRIOLI, SILVIA. "MEASURING CMB POLARIZATION WITH THE LSPE EXPERIMENT: SIMULATION AND SENSITIVITY STUDIES FOR THE STRIP INSTRUMENT." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/771090.

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The search of primordial B-mode fluctuations in the polarization pattern of the Cosmic Microwave Background (CMB) is one of the most active and challenging fields in modern observational cosmology. A detection of primordial B-modes would in fact provide a strong evidence in favour of the Inflationary paradigm, shedding light on the physics of the early Universe. The Large Scale Polarization Explorer is an Italian-led experiment designed to measure the CMB polarization at large angular scales. Its primary goals are the constraint of the B-mode component down to r = 0.03 and the study of the p
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Pereira, Jefferson de Sousa. "Construção de instrumentos de observação astronômica para o ensino de óptica geométrica." reponame:Repositório Institucional da UnB, 2016. http://repositorio.unb.br/handle/10482/23288.

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Dissertação (mestrado)—Universidade de Brasília, Instituto de Física, Programa de Pós-Graduação em Física, 2016.<br>Submitted by Fernanda Percia França (fernandafranca@bce.unb.br) on 2017-04-05T17:04:58Z No. of bitstreams: 1 2016_JeffersondeSousaPereira.pdf: 3009029 bytes, checksum: c1c93380eee952cecca229304e89ff1a (MD5)<br>Approved for entry into archive by Raquel Viana(raquelviana@bce.unb.br) on 2017-04-17T17:57:48Z (GMT) No. of bitstreams: 1 2016_JeffersondeSousaPereira.pdf: 3009029 bytes, checksum: c1c93380eee952cecca229304e89ff1a (MD5)<br>Made available in DSpace on 2017-04-17T17:57:4
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Maino, Davide. "The Planck-LFI : a Study of Instrumental and Astrophysical Effects." Doctoral thesis, SISSA, 1999. http://hdl.handle.net/20.500.11767/4381.

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This thesis aims to address some aspects of the Low Frequency Instrument (LFI) on board the PLANCK satellite. As for any CMB experiment a great attention has to be devoted to all the possible systematic effects. Previous experiences in CMB experiments have in fact demonstrated that the more and the larger are systematic effects which contaminate the data and which have to be scrubbed in the data analysis, the less robust the final results will be. It is therefore of great importance, for not degrading the nominal angular resolution and sensitivity per resolution element, to carefully add
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Heizer, Alda Lucia. "Observar o ceu e medir a terra : instrumentos cientificos e a participação do Imperio do Brasil na Exposição de Paris de 1889." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287043.

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Orientador : Maria Margaret Lopes<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Geociencias<br>Made available in DSpace on 2018-08-04T02:34:20Z (GMT). No. of bitstreams: 1 Heizer_AldaLucia_D.pdf: 6141642 bytes, checksum: 0983ba3a2e79903ed8c65ba8fac199e2 (MD5) Previous issue date: 2005<br>Resumo: A presente pesquisa tem por finalidade contribuir para a História das Grandes Exposições da segunda metade do século XIX, sublinhando a participação do Império do Brasil nesses grandes eventos, em particular na Exposição Universal de Paris de 1889. Consideramos possível, ao an
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INCARDONA, FEDERICO. "OBSERVING THE POLARIZED COSMIC MICROWAVE BACKGROUND FROM THE EARTH: SCANNING STRATEGY AND POLARIMETERS TEST FOR THE LSPE/STRIP INSTRUMENT." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/701276.

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Detecting B-mode polarization anisotropies on large angular scales in the Cosmic Microwave Background (CMB) polarization pattern is one of the major challenges in modern observational cosmology since it would give us an important evidence in favor of the inflationary paradigm and would shed light on the physics of the very early Universe. Multi-frequency observations are required to disentangle the very weak CMB signal from diffuse polarized foregrounds originating by radiative processes in our galaxy. The “Large Scale Polarization Explorer” (LSPE) is an experiment that aims to constrain the r
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Oliveira, David Alisson Uchôa de. "As Grandes Navegações: aspectos matemáticos de alguns instrumentos náuticos." Universidade Federal da Paraíba, 2017. http://tede.biblioteca.ufpb.br:8080/handle/tede/9838.

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Submitted by Leonardo Cavalcante (leo.ocavalcante@gmail.com) on 2018-05-03T12:33:08Z No. of bitstreams: 1 Arquivototal.pdf: 6002949 bytes, checksum: 0ed7572907f269ddd55b584658c9ccd2 (MD5)<br>Approved for entry into archive by Viviane Lima da Cunha (viviane@biblioteca.ufpb.br) on 2018-05-03T13:17:53Z (GMT) No. of bitstreams: 1 Arquivototal.pdf: 6002949 bytes, checksum: 0ed7572907f269ddd55b584658c9ccd2 (MD5)<br>Made available in DSpace on 2018-05-03T13:17:53Z (GMT). No. of bitstreams: 1 Arquivototal.pdf: 6002949 bytes, checksum: 0ed7572907f269ddd55b584658c9ccd2 (MD5) Previous issue date:
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Andrade, Denis Furtado de. "Otimização das câmeras astronômicas do instrumento Brazilian Tunable Filter Imager." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-26082016-160404/.

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Este trabalho apresenta os resultados obtidos no processo de otimização realizado nas câmeras astronômicas do instrumento BTFI (Brazilan Tunable Filter Imager) instalado no telescópio SOAR, no Chile, para reduzir o ruído nos sinais. O instrumento BTFI opera com duas câmeras astronômicas de alto desempenho que utilizam detectores de imagens denominados EMCCDs. Esses detectores são sensores de imagem baseados em dispositivos de carga acoplada (CCDs) otimizados por um estágio integrado de multiplicação de elétrons por avalanche. Essa característica permite atingir ao mesmo tempo altas taxas de le
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Carvalho, Rui Pedro. "Ilustrações de instrumentos científicos de física e astronomia. Ilustrações de instrumentos científicos do Observatório Astronómico do Paço das Escolas e do Gabinete de Física do Museu da Ciência da Universidade de Coimbra." Master's thesis, Universidade de Évora, 2011. http://hdl.handle.net/10174/14706.

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Este relatório destina-se a dar a conhecer os projectos que foram desenvolvidos no âmbito de um estágio de final da I edição do Mestrado em Ilustração – vertente Ilustração Científica. Este estágio decorreu no Museu da Ciência da Universidade de Coimbra e teve como propósito conceber ilustrações dos instrumentos das colecções de Física e do Observatório Astronómico que existiu no Paço das Escolas da UC. As ilustrações destinam-se a ilustrar a função de alguns dos objectos expostos no Museu cujas colecções, assim como, o Observatório Astronómico tiveram origem na grande reforma que em 1772 o Ma
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Veras, Alcione da Anunciacao Caetano Lobao. "O uso de modelos e aparelhos no ensino de astronomia nas séries iniciais do ensino básico: instrumentos de mediação para o aprendizado." Universidade Federal de Minas Gerais, 2007. http://hdl.handle.net/1843/FAEC-855HUC.

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The thematic that this research intended to investigate inserts in the context of the work developed with children from a classroom of the initial series in activity of Natural Sciences Education from the Project Astronomy. This research has for episthemologic premise the perspective that the social interaction in specific institutional spaces is the responsible axis for the knowledge construction process. The individual becomes subject of the learning in the interaction process with the culture and interlocution with the other, which according to Vygotsky, (1986), it integrates the social and
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Cavalcanti, Luiz Eduardo Mendonça. "Sistema de controle para o filtro óptico sintonizável Fabry-Perot do instrumento BTFI." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-06042011-115126/.

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Este trabalho trata do desenvolvimento de um sistema de controle para um módulo do instrumento astronômico BTFI (Brazilian Tunable Filter Imager), um filtro óptico sintonizável altamente versátil que está instalado no telescópio SOAR, localizado no Chile. Será empregado neste instrumento um novo interferômetro Fabry-Perot, capaz de realizar observações em uma ampla faixa de resoluções espectrais. Para operar com resolução espectral variável, o Fabry-Perot proposto neste projeto terá uma faixa mais ampla de ajuste do vão entre suas placas refletivas, utilizando atuadores piezelétricos amplifica
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