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1	Development of an automated system for the measurement of focal ratio degradation of high numerical aperture fibres Lee, Jooyoung 07 August 2019 (has links) The thesis presents the development and testing of an automated fibre optic test system for the measurement of focal ratio degradation (FRD) in high numerical aperture fibres. In particular, the fibres under examination are being proposed for use in the Maunakea Spectroscopic Explorer (MSE), a new telescope currently being designed for wide-field surveys of the night sky. A critical subsystem of the MSE is the Fiber Transmission System (FiTS) that connects the focal plane to the telescope’s spectrographs. In preparation for MSE-FiTS, a method of characterizing the focal ratio degradation (FRD), between the input and output of every fibre, of candidate multi-mode fibres is highly important. The ultimate goal is the testing of all 4,332 fibres after assembly and prior to installation on MSE. An optical bench has been constructed to test the performance of an automated characterization system; a variation on the collimated beam test. Herein we present the underlying analysis FRD measurement method, the optical design of the test bench, the motion control system and the software for measuring FRD, and controlling the automated test system. The open-source automation software is also introduced; the Big FiTS Fibre Wrapper (Big FFW). The results of tests performed using the Big FFW on samples of candidate fibres are presented and compared with the results in the literature using manual methods. The results suggest that the candidate MSE fibre meets the science requirement of less than 5% focal ratio degradation for an f/2 input beam measured at the fibre output. There is less than 1% disagreement between the automated measurement method and manual methods reported in the literature. The fully automated system can measure the FRD of up to 10 fibres in a typical MSE fibre bundle configuration. / Graduate MSE Fibres Focal Ratio Degradation FRD Throughput GRACES
2	Chemo-dynamics of newly discovered metal-poor stars and improved spectroscopic tools Kielty, Collin Louis 07 January 2021 (has links) This dissertation presents two chemo-dynamical analyses of metal-poor stars found within the Milky Way. 115 metal-poor candidate stars, including 28 confirmed very metal-poor stars, selected from the narrow-band Pristine photometric survey are presented based on CFHT high-resolution ESPaDOnS spectroscopy. An additional 30 confirmed very metal-poor stars selected from Pristine are examined based on Gemini/GRACES spectroscopy. Chemical abundances are determined for a total of 19 elements (Li, Na, Mg, K, Ca, Sc, Ti, Cr, Mn, Fe, Ni, Cu, Zn, Y, Zr, Ba, La, Nd, Eu) across these studies, which are combined with Gaia DR2 parallaxes and proper motions to paint a chemically diverse map of ancient stars in the Galaxy. Abundance patterns similar to those seen in "normal" metal-poor Galactic halo stars are found in a majority of the stars studied here, however new discoveries of a handful of chemically unique and kinematically intriguing metal-poor stars are presented. The chemo-dynamics of these novel stellar relics point towards chemical signatures of unique and potentially unstudied stellar yields, in addition to stars with origins in accreted dwarf galaxies and the ancient progenitors of the proto-Milky Way. The success of these relatively small studies heralds the great contributions to Galactic archaeology expected from the next generation of large multi-object spectroscopic surveys. Contained within are two other projects that introduce data products related to Gemini Observatory instruments. A version of the convolutional neural network StarNet, tuned to medium-resolution R~6000 H-band spectra is presented. This model was trained on synthetic stellar spectra containing a range of data augmentation steps to more accurately reflect the observed spectra expected from medium-resolution instruments, like the Gemini-North Near-Infrared Integral Field Spectrometer (NIFS) or GIRMOS. In an era when spectroscopic surveys are capable of collecting spectra for hundreds of thousands of stars, fast and efficient analysis methods are required to maximize scientific impact, and StarNet delivers on these expectations over a range of spectral resolutions. Finally, a python package called Nifty4Gemini, and its associated Pyraf/Python based pipeline for processing NIFS observations is included. Nifty4Gemini reduces NIFS raw data and produces a flux and wavelength calibrated science cube with the full signal-to-noise, ready for science analysis. / Graduate Milky Way Pristine photometric survey Gemini/GRACES spectroscopy
3	Vyobrazení zázraků na poutních místech doby barokní / Iconography of Miracles at the Pilgrim Places of the Baroque Period Káčerek, Roman January 2018 (has links) This diploma thesis deals mainly with iconography of miraculous events at selected places of pilgrimage on the background of their factual history and the overall tradition of certain Marian cults. The first part of the thesis is devoted to the analysis of deliberately chosen pilgrimage sites in all cases, with an emphasis on their initial and other specific miraculous events of non-biblical nature concerning primarily the lives of ordinary people. These analyzes provide a basic insight into the general-factographic history of the relevant sites, which is necessary for the detailed examination of the relevant miraculous events. Primary attention is devoted to the analysis of the original miracles of the pilgrimage sites, especially by their depictions. Within the scope of individual pilgrimage sites, this thesis also seeks to analyze all other pictures of the mercy of the Marian. Great emphasis is also placed on written entries of the mentioned miraculous events, which in most cases very probably preceded their picture delineation. The second part of the thesis tries to systemate the results of the researches and compare them with one another. It is a comparison of the miraculous images that are being discussed, which are done mainly in terms of content and in terms of their writing. It is a...
4	Mary, Summa Contemplatrix in Denis the Carthusian Maroney, Fr. Simon Mary of the Cross, M. Carm. 25 May 2021 (has links) No description available. Ancient Languages Bible Biblical Studies Classical Studies Clergy Clerical Studies Cultural Anthropology European History European Studies Foreign Language Germanic Literature History Medieval History Medieval Literature Middle Ages Religion Religious Congregations Religious History Religious Education Social Research Spirituality Theology Mary Blessed Virgin Our Lady Denis the Carthusian Carthusian Order monasticism spirituality contemplation contemplative life mysticism union with God prayer extraordinary graces Mother of God Immaculate Conception Assumption monk cloister

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