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Author: National Aeronautics Administration
Publisher: CreateSpace
ISBN: 9781505568585
Category :
Languages : en
Pages : 536
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Book Description
The "Second Workshop on New Concepts for Far-Infrared and Submillimeter Space Astronomy" aimed to highlight the groundbreaking opportunities available for astronomical investigations in the far-infrared to submillimeter using advanced, space-based telescopes. The National Research Council's Decade Report, "Astronomy and Astrophysics in the New Millennium," assigned a high priority to a Single Aperture Far-Infrared (SAFIR) observatory and encouraged the subsequent development of space-based far-infrared interferometry. With community guidance from the Origins and Structure and Evolution of the Universe Subcommittees of the Space Science Advisory Committee, NASA recently incorporated SAFIR and a kilometer maximum baseline far-IR interferometer into the Space Science roadmap. The interferometer is widely known as SPECS, the Submillimeter Probe of the Evolution of Cosmic Structure. An important outcome of this workshop was the development of a "Community Plan for Far-IR/Submillimeter Space Astronomy". The name "Community Plan" was adopted because this paper gives the consensus view of the workshop participants. The Community Plan addresses practical considerations, such as the tradeoffs associated with alternative mission designs and the flowdown from scientific objectives to measurement requirements, engineering requirements, and technology needs. It recommends an implementation strategy for technology development and validation, and recommends specific science and technology pathfinder missions that would pave the way for the "roadmap missions" SAFIR and SPECS. The community plan concludes by saying: "The time is right to place SAFIR on the NASA plan as one of the successors of SIRTF and JWST, to set our sights on a longbaseline far-infrared/submillimeter interferometric imaging telescope, to further develop far-infrared/submillimeter single-aperture and interferometric mission concepts, and to invest strategically in the technology that will enable future far-infrared/submillimeter missions. Supporting studies and smaller mission opportunities should be actively pursued."
Author: National Aeronautics Administration
Publisher: CreateSpace
ISBN: 9781505568585
Category :
Languages : en
Pages : 536
Get Book Here
Book Description
The "Second Workshop on New Concepts for Far-Infrared and Submillimeter Space Astronomy" aimed to highlight the groundbreaking opportunities available for astronomical investigations in the far-infrared to submillimeter using advanced, space-based telescopes. The National Research Council's Decade Report, "Astronomy and Astrophysics in the New Millennium," assigned a high priority to a Single Aperture Far-Infrared (SAFIR) observatory and encouraged the subsequent development of space-based far-infrared interferometry. With community guidance from the Origins and Structure and Evolution of the Universe Subcommittees of the Space Science Advisory Committee, NASA recently incorporated SAFIR and a kilometer maximum baseline far-IR interferometer into the Space Science roadmap. The interferometer is widely known as SPECS, the Submillimeter Probe of the Evolution of Cosmic Structure. An important outcome of this workshop was the development of a "Community Plan for Far-IR/Submillimeter Space Astronomy". The name "Community Plan" was adopted because this paper gives the consensus view of the workshop participants. The Community Plan addresses practical considerations, such as the tradeoffs associated with alternative mission designs and the flowdown from scientific objectives to measurement requirements, engineering requirements, and technology needs. It recommends an implementation strategy for technology development and validation, and recommends specific science and technology pathfinder missions that would pave the way for the "roadmap missions" SAFIR and SPECS. The community plan concludes by saying: "The time is right to place SAFIR on the NASA plan as one of the successors of SIRTF and JWST, to set our sights on a longbaseline far-infrared/submillimeter interferometric imaging telescope, to further develop far-infrared/submillimeter single-aperture and interferometric mission concepts, and to invest strategically in the technology that will enable future far-infrared/submillimeter missions. Supporting studies and smaller mission opportunities should be actively pursued."
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 538
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Book Description
Author: Harley A. Thronson Jr.
Publisher: Springer Science & Business Media
ISBN: 9401103631
Category : Science
Languages : en
Pages : 229
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Book Description
A revolution similar to that brought by CCDs to visible astronomy is still ahead in IR and submillimeter astronomy. There is certainly no wavelength range which has, over the past several years, seen such impressive advances in technology: large-scale detector arrays, new designs for cooling in space, lightweight mirror technologies. Scientific cases for observing the cold universe are outstanding. Observations in the FIR/Submm range will provide answers to such fundamental questions as: What is the spectrum of the primordial fluctuations? How do primeval galaxies look? What are the first stages of star formation? Most of the international space missions that have been triggered by these questions are presented in detail here. Technological issues raised by these missions are reviewed, as are the most recent achievements in cooling and detector technologies.
Author:
Publisher:
ISBN:
Category : Space astronomy
Languages : en
Pages : 56
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Book Description
Author: G.G. Fazio
Publisher: Springer Science & Business Media
ISBN: 9401012113
Category : Science
Languages : en
Pages : 225
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Book Description
The Symposium on Infrared and Submillimeter Astronomy was held in Philadelphia, Pennsylvania, U.S.A., on June 8-10, 1976, as an activity associated with the Nineteenth Plenary Meeting of the Committee on Space Research (CaSPAR). The Symposium was sponsored jointly by CaSPAR, the International Astronomical Union (IAU) and the International Union of Radio Science CURSI). caSPAR is an interdisciplinary scientific organization, established by the International Council of Scientific Unions in 1958, to, in the words of its charter, "provide the world scientific community with the means whereby it may exploit the possibilities of satellites and space probes of all kinds for scientific purposes and exchange the resulting data on a co operative basis." The purpose of this particular CaSPAR Sympo sium was to present new results in infrared and submillimeter astronomy obtained by observations on aircraft, high altitude balloons, rockets, satellites, and space probes. Topics dis cussed included the Sun, the solar system, galactic and extra galactic objects as well as the cosmic background radiation. Instrumentation for observations in infrared and submillimeter astronomy was also discussed, with particular emphasis on future programs from space observatories.
Author: Paul R. Wesselius
Publisher:
ISBN:
Category : Infrared astronomy
Languages : en
Pages : 150
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Book Description
Author: David L. Clements
Publisher: CRC Press
ISBN: 148223727X
Category : Science
Languages : en
Pages : 292
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Book Description
Uncover the Secrets of the Universe Hidden at Wavelengths beyond Our Optical Gaze William Herschel’s discovery of infrared light in 1800 led to the development of astronomy at wavelengths other than the optical. Infrared Astronomy – Seeing the Heat: from William Herschel to the Herschel Space Observatory explores the work in astronomy that relies on observations in the infrared. Author David L. Clements, a distinguished academic and science fiction writer, delves into how the universe works, from the planets in our own Solar System to the universe as a whole. The book first presents the major telescopes in the world of observational infrared astronomy, explains how infrared light is detected through various kinds of telescopes, and describes practical problems that send infrared astronomers to the tops of mountains and their telescopes into orbit and beyond. Much of the book focuses on what infrared astronomers find in their observations. You’ll discover what infrared astronomy reveals about the planets, moons, and other bodies that constitute our Solar System; star formation and stellar evolution; the processes that shape galaxies; and dark energy and dark matter. Infrared astronomy has revolutionized our understanding of the universe and has become essential in studying cosmology. Accessible to amateur astronomers, this book presents an overview of the science and technology associated with infrared astronomy. With color figures, it shows you how infrared astronomy provides insights into the workings of the universe that are unavailable at other wavelengths.
Author: Laurent Pagani
Publisher:
ISBN:
Category : Orbiting astronomical observatories
Languages : en
Pages : 264
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Book Description
Author:
Publisher:
ISBN:
Category : Infrared astronomy
Languages : en
Pages : 622
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 131
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Book Description
Far-infrared (IR) and submillimeter (15 [mu]m-1 mm) spectroscopy provides a powerful tool to probe a wide range of environments in the universe. In the past thirty years, many space-based observatories have opened the far-IR window to the universe, providing unique insights into several astrophysical processes related to the evolution of the early universe. Nonetheless, the size and cost of the cryogenic spectrometers required to carry out such measurements have been a limiting factor in our ability to fully explore this rich spectral region and answer questions regarding the very first moments of the universe. Among the key technologies required to enable this science are ultra-low-noise, far-IR, direct-detection spectrometers. In this thesis, Micro-Spec ([mu]-Spec) is proposed as a novel technology concept to enable a large range of flight missions that would otherwise be challenging due to the large size of current instruments and the required spectral resolution and sensitivity. [mu]-Spec is a direct-detection spectrometer operating in the 450-1000-[mu]m regime, which employs superconducting microstrip transmission lines to achieve a resolution (R >/= 1200) and be integrated on a ~10-cm2 silicon chip. The objective of this thesis is to explore the feasibility of the [mu]-Spec technology. First, analytical models are developed for the dielectric function of silicon compounds to be used as substrates in the transmission lines. These materials represent the ultimate source of loss in the system. The models are used to analyze laboratory spectral data of silicon nitride and oxide films and provide information on the loss within a 4% accuracy. A design methodology is then developed for the spectrometer diffractive region given specific requirements on size and spectral range. This methodology is used to explore the design space and find the optimal solutions that maximize the instrument efficiency and minimize the phase error on the focal plane. Five designs are described with different requirements and performance. Finally, analysis and calibration techniques are developed to study the properties of the superconducting materials employed in the transmission lines and detectors. These techniques are applied to laboratory data of molybdenum nitride and niobium to extract their quality factors and kinetic inductance fraction within a 1% accuracy.
