Search results for: wide-field-spectroscopy

Wide Field Spectroscopy

Author : E. Kontizas
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E. KONTIZAS Astronomical Institute National Observatory of Athens P. O. Box 20048 Athens GR-1181O GREECE The international conference on "Wide-Field Spectroscopy" and its sub ject matter were agreed during the general assembly of the International Astronomical Union (IAU) in August 1994 by the Working Group of Com mision 9 "Wi de-Field Imaging". This meeting gave an opportunity to world experts on this subject to gather in Athens, in order to discuss the cur rent exploitation and the impending opportunities that exist in the area of multi-object spectroscopy, with particular emphasis on: 1. Astronomical instruments, data acquisition, processing and analysis techniques. 2. Astrophysical problems best tackled through wide-field, multi-object spectroscopy. The new fibre optic technology offers an important tool for the advancement of basic research and the development of industrial applications. Astronom ical spectroscopy is a field of astronomy which has contributed much to the advancement of fundamental physics. The spectra of hot stars have been used to determine the well-known Balmer formula for the wavelength of hydrogen lines, in the late 19th century. Since then, spectroscopy has made enormous progress in stellar atmosphere studies, in kinematics, and in the detection of high redshifts in the Universe. The traditional techniques of obtaining wide-field spectroscopic data are based on slitless spectroscopy (objective prism). Several observations, world wide, make use ofthese tech niques in order to obtain information on the spectral properties of objects in large areas of the sky.

Wide Field Spectroscopy and the Distant Universe

Author : Steve J. Maddox
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Wide Field Spectroscopy And The Distant Universe Proceedings Of The 35th Herstmonceux Conference

Author : Maddox S
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Galaxies represent the most readily visible fabric of the cosmos. Their morphological types, luminosities and environmental surroundings contain valuable clues as to their origin and evolution. Locally, a strong correlation is seen between galaxy morphology and environmental location; this may have been molded at surprisingly modest redshifts. Spectroscopic and photometric studies of deep fields also suggest remarkably recent changes in the galaxy population. The associated growth of structure during the same interval can be tracked via X-ray studies of distant clusters of galaxies.Very recently, impressive observational facilities have been completed, each of which has extended the astronomers' dataset to look-back times where such evolutionary effects can be studied.This volume discusses surveys which share a common theme — the need for a large number of ground-based spectra. It focuses on the various approaches via a single theme concerned with the evolution of galaxies and their distribution. In the near future, impressive new observational facilities will be able to generate large statistical spectroscopic surveys, and the aim of this volume is to assess the scientific impact that ongoing and future spectroscopic surveys can make. Emphasis is placed on the role of non-optical and satellite facilities and the co-ordination of international efforts.

Wide field Correlation Spectroscopy of Aqueous Molecular Solutions Using CLiC Imaging

Author : John Ross
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"Many biochemical processes rely on weak and slow biomolecular interactions, such as interactions between protein and DNA molecules during DNA replication, repair, and transcription. Developing sensitive methodologies to characterize their energetics, kinetics, stoichiometries, and cooperativities in free solution is important for developing new biophysical insights. However, single-molecule experiments are typically limited to low concentrations and low signal to noise ratios when using standard confocal microscopy and total internal reflection fluorescence microscopy (TIRFM). This project introduces a new way of visualizing nanoscale interactions between biomolecules which combines Leslie's Convex Lens-induced Confinement (CLiC) imaging platform with Wiseman's wide-field k-space image correlation spectroscopy (kICS) techniques. CLiC confines a sample to a nanoscale wedge-shaped gap, meaning that the biomolecules are essentially restricted to two dimensions of movement. Due to the shallow sample depth, out-of-focus background fluorescence can be eliminated by a factor of 20 or more compared to TIRFM and confocal imaging. Similarly, per-molecule observation times of CLiC are increased by a factor of 10 000 compared to standard methods, meaning that very weak interactions and slow dynamics that were previously impossible to measure can now be analyzed. The kICS analysis also has inherent advantages, including correlation function insensitivity to quantum efficiency, optical system point spread function (PSF), and photophysical effects such as blinking. This project is primarily focused toward developing the CLiC kICS methodology using simple oligonucleotide systems. Analytical expressions are used to predict appropriate fitting ranges of the correlation function to extract characteristic rates. Furthermore, the single-dimension relationship between individual system parameters and correlation bias is calculated to assess appropriate imaging limits." --

Next Generation Wide field Multi object Spectroscopy

Author : Michael J. I. Brown
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Astronomy from Wide Field Imaging

Author : International Astronomical Union. Symposium
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Proceedings of the 161st Symposium of the International Astronomical Union, held in Potsdam, Germany, August 23--27, 1993

Optical 3D Spectroscopy for Astronomy

Author : Roland Bacon
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Over the last 50 years, a variety of techniques have been developed to add a third dimension to regular imaging, with an extended spectrum associated to every imaging pixel. Dubbed 3D spectroscopy from its data format, it is now widely used in the astrophysical domain, but also inter alia for atmospheric sciences and remote sensing purposes. This is the first book to comprehensively tackle these new capabilities. It starts with the fundamentals of spectroscopic instruments, in particular their potentials and limits. It then reviews the various known 3D techniques, with particular emphasis on pinpointing their different `ecological? niches. Putative users are finally led through the whole observing process, from observation planning to the extensive ? and crucial - phase of data reduction. This book overall goal is to give the non-specialist enough hands-on knowledge to learn fast how to properly use and produce meaningful data when using such a 3D capability.

Fluorescence Spectroscopy in Biology

Author : Martin Hof
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Volume 3 of this new series focuses on brandnew research and applications in biology, biophysics and other fields of life sciences. Many frontline researcher have contributed to this highly attractive and interdisciplinary volume which spans the entire field of present fluorescence spectroscopy including nanotechnology, membrane and DNA studies and fluorescence imaging in cancer research.

Wide Field Surveys in Cosmology

Author : Stéphane Colombi
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Science Perspectives for 3D Spectroscopy

Author : Markus Kissler-Patig
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This volume contains the proceedings of possibly the last conference ever on integral-field spectroscopy. The contributors, noted authorities in the field, focus on the scientific questions that can be answered with integral-field spectroscopy, ranging from solar system studies all the way to high redshift surveys. Overall readers get a state-of-the-science review of astronomical 3D spectroscopy.

Outskirts of Galaxy Clusters IAU C195

Author : International Astronomical Union. Colloquium
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Proceedings of the International Astronomical Union Colloquium no. 195, held in Torino, Italy in 2004.

Principles of Fluorescence Spectroscopy

Author : Joseph R. Lakowicz
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The third edition of this established classic text reference builds upon the strengths of its very popular predecessors. Organized as a broadly useful textbook Principles of Fluorescence Spectroscopy, 3rd edition maintains its emphasis on basics, while updating the examples to include recent results from the scientific literature. The third edition includes new chapters on single molecule detection, fluorescence correlation spectroscopy, novel probes and radiative decay engineering. Includes a link to Springer Extras to download files reproducing all book artwork, for easy use in lecture slides. This is an essential volume for students, researchers, and industry professionals in biophysics, biochemistry, biotechnology, bioengineering, biology and medicine.

3D Spectroscopy in Astronomy

Author : E. Mediavilla
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Lectures from the seventeenth Winter School of the Canary Islands Astrophysics Institute on new 3D spectroscopy techniques and data.

Fluorescence Lifetime Spectroscopy and Imaging

Author : Laura Marcu
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During the past two decades, there has been an increasing appreciation of the significant value that lifetime-based techniques can add to biomedical studies and applications of fluorescence. Bringing together perspectives of different research communities, Fluorescence Lifetime Spectroscopy and Imaging: Principles and Applications in Biomedical Dia

Translational Multimodality Optical Imaging

Author : Fred S. Azar
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Supported with 119 illustrations, this milestone work discusses key optical imaging techniques in self-contained chapters; describes the integration of optical imaging techniques with other modalities like MRI, X-ray imaging, and PET imaging; provides a software platform for multimodal integration; presents cutting-edge computational and data processing techniques that ensure rapid, cost-effective, and precise quantification and characterization of the clinical data; covers advances in photodynamic therapy and molecular imaging, and reviews key clinical studies in optical imaging along with regulatory and business issues.

Neutron Spin Echo Spectroscopy

Author : Ferenc Mezei
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Neutron spin echo (NSE) spectroscopy is the highest energy resolution neutron scattering technique available for examining a large area (in time and space) in condensed matter physics. This broad dynamic and spatial range is extensively exploited in the study of a wide range of scientific problems ranging from the dynamics of glasses, polymer melts, complex fluids and microemulsions to the elementary excitations in superfluid 4He and to ferromagnets and spin glasses. This book reviews the current status and future prospects in NSE spectroscopy describing the method, latest instrumentation and also the use of NSE in fundamental, hard- and soft-matter science. It provides first-hand information for researchers working in the fields touched by NSE. In addition, young researchers, PhD students and graduates interested in the method will obtain a comprehensive overview and guidelines to implementing the NSE technique.

Extragalactic Globular Cluster Systems

Author : Markus Kissler-Patig
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Dramatic progress is a trademark of the recent study of globular cluster systems. Considerations about the formation and evolution compose the first chapter, followed by a chapter on young star clusters. Then come four chapters reviewing the globular cluster system of early-type, late-type and dwarf galaxies, as well as of groups of galaxies. One chapter is dedicated to stellar population models and their applications to the field. Finally a chapter reviews the kinematics of galaxies derived from globular cluster systems and another their role in the context of galaxy formation and evolution studies. As a whole, the book gives an up-to-date view of the field at the beginning of the new decade, which will without doubt again bring significant progress in our understanding of globular cluster systems and galaxy formation and evolution.

Handbook of CCD Astronomy

Author : Steve B. Howell
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A concise and accessible reference on the practical use of CCDs.

Handbook of Spectroscopy

Author : G¿nter Gauglitz
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This second, thoroughly revised, updated and enlarged edition provides a straightforward introduction to spectroscopy, showing what it can do and how it does it, together with a clear, integrated and objective account of the wealth of information that may be derived from spectra. It also features new chapters on spectroscopy in nano-dimensions, nano-optics, and polymer analysis. Clearly structured into sixteen sections, it covers everything from spectroscopy in nanodimensions to medicinal applications, spanning a wide range of the electromagnetic spectrum and the physical processes involved, from nuclear phenomena to molecular rotation processes. In addition, data tables provide a comparison of different methods in a standardized form, allowing readers to save valuable time in the decision process by avoiding wrong turns, and also help in selecting the instrumentation and performing the experiments. These four volumes are a must-have companion for daily use in every lab.

High Resolution Infrared Spectroscopy in Astronomy

Author : Hans Urich Käufl
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Two specialized new instruments for ESO's VLT, VISIR and CRIRES, spawned the idea for this workshop. CRIRES is a dedicated very high resolution infrared spectrograph; VISIR features a high resolution spectroscopic mode. Together, the instruments combine the sensitivity of an 8m-telescope with the now well-established reliability of VLT-facility instruments. High resolution here means that lines in cool stellar atmospheres and HII-regions can be resolved. The astrophysical topics discussed in this rather specialized workshop range from the inner solar system to active galactic nuclei. There are many possibilities for new discoveries with these instruments, but the unique capability, which becomes available through high-resolution infrared spectroscopy, is the observation of molecular rotational-vibrational transitions in many astrophysical environments. Particularly interesting and surprising in this context, many papers on modeling and laboratory spectroscopy at the workshop appear to indicate that astronomical observations are lagging a bit behind in this field. The papers are an interesting mix of reports from existing high resolution facilities, reports on modeling efforts of synthetic spectra and reports on laboratory spectra. In this sense, a fruitful exchange between molecular physics and astronomy was again accomplished and is documented in this volume.