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Author: Ian Veenendaal Publisher: ISBN: Category : Languages : en Pages :
Book Description
The continued improvement in the sensitivity of far-infrared detectors has caused scientists to reconsider the design of cryogenically cooled instruments which can fully exploit their potential. The SAFARI instrument on the SPICA observatory is one such instrument which will employ a medium resolution grating-based spectrometer, with an optional high-resolution module. While a Martin-Puplett Fourier transform spectrometer was ultimately selected for the high-resolution module, an initial design was a Fabry-P\'{e}rot interferometer This thesis presents the design and performance of a cryogenic, angle-scanned Fabry-P\'{e}rot interferometer for future far-infrared astronomical spectrometers. In addition, multiple custom subcomponents were required in order to characterize the interferometer, including a tunable terahertz line source, a cryogenic diffraction grating monochromator, and a cryogenic, laser-based position metrology system. Novel features of the design were discussed, and the spectral response of the instrument was modelled. Spectral line profiles were verified using specialized calibration line sources.
Author: Ian Veenendaal Publisher: ISBN: Category : Languages : en Pages :
Book Description
The continued improvement in the sensitivity of far-infrared detectors has caused scientists to reconsider the design of cryogenically cooled instruments which can fully exploit their potential. The SAFARI instrument on the SPICA observatory is one such instrument which will employ a medium resolution grating-based spectrometer, with an optional high-resolution module. While a Martin-Puplett Fourier transform spectrometer was ultimately selected for the high-resolution module, an initial design was a Fabry-P\'{e}rot interferometer This thesis presents the design and performance of a cryogenic, angle-scanned Fabry-P\'{e}rot interferometer for future far-infrared astronomical spectrometers. In addition, multiple custom subcomponents were required in order to characterize the interferometer, including a tunable terahertz line source, a cryogenic diffraction grating monochromator, and a cryogenic, laser-based position metrology system. Novel features of the design were discussed, and the spectral response of the instrument was modelled. Spectral line profiles were verified using specialized calibration line sources.
Author: Siegfried Böhme Publisher: Springer Science & Business Media ISBN: 3662123371 Category : Science Languages : en Pages : 857
Book Description
Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is devoted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documenta tion of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, compared to which our system of accumu lating abstracts for about six months offers the advantage of greater convenience for the user. Volume 32 contains literature published in 1982 and received before February 11, 1983; some older literature which was received late and which is not recorded in earlier volumes is also included. We acknowledge with thanks contributions to this volume by Dr. J. Bou~a, Prague, who surveyed journals and publications in Czech and supplied us with abstracts in English.
Author: S. Böhme Publisher: Springer Science & Business Media ISBN: 3662111845 Category : Science Languages : en Pages : 825
Book Description
Astronomy and Astrophysics Abstracts aims to present a comprehensive documen tation of the literature concerning all aspects of astronomy, astrophysics, and their border fields. It is devoted to the recording, summarizing, and indexing of the relevant publications throughout the world. Astronomy and Astrophysics Abstracts is prepared by a special department of the Astronomisches Rechen-Institut under the auspices of the International Astronomical Union. Volume 33 records literature published in 1983 and received before August 1, 1983. Some older documents which we received late and which are not surveyed in earlier volumes are included too. We acknowledge with thanks contributions of our colleagues all over the world. We also express our gratitude to all organizations, observatories, and publishers which provide us with complimentary copies of their publications. Starting with Volume 33, all the recording, correction, and data processing work was done by means of computers. The recording was done by our technical staff members Ms. Helga Ballmann, Ms. Mona El-Choura, Ms. Monika Kohl, and Ms. Sylvia Matyssek. Mr. Martin Schlotelburg and Mr. Ulrich Uberall supported our task by careful proofreading. It is a pleasure to thank them all for their encouragement. Heidelberg, September 1983 The Editors Contents Introduction . . . . . . . . . . . . 1 Concordance Relation: ICSU-AB-AAA 3 Abbreviations 10 Periodicals, Proceedings, Books, Activities 001 Periodicals . . . . . . . . . . . 15 002 Bibliographical Publications, Documentation, Catalogues, Atlases 47 003 Books ...... . 51 004 History of Astronomy 58 005 Biography . . 64 006 Personal Notes 65 007 Obituaries . . .
Author: Astronomisches Rechen-InstitutARI Publisher: Springer Science & Business Media ISBN: 3642517587 Category : Science Languages : en Pages : 1746
Book Description
Astronomy and Astrophysics Abstracts is devoted to the recording, summarizing and indexing of astronomical publications throughout the world. Two volumes are scheduled to appear per year. Volume 67 records 10,903 papers covering besides the classical fields of astronomy and astrophysics such matters as space flights related to astronomy, lunar and planetary probes and satellites, meteorites and interplanetary matter, X rays and cosmic rays, quasars and pulsars. The abstracts are classified under more than one hundred subject categories thus permitting quick surveying of the bulk of material published on the same topic within six months. For instance, this volume records 119 papers on minor planets, 155 papers on supernovae, and 554 papers on cosmology.
Author: Roland Bacon Publisher: John Wiley & Sons ISBN: 3527412026 Category : Science Languages : en Pages : 307
Book Description
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.
Author: Ian Veenendaal
Author: Ian Veenendaal
Author: 
Author: Siegfried Böhme
Author: 
Author: S. Böhme
Author: 
Author: Astronomisches Rechen-InstitutARI
Author: Roland Bacon
Author: 
Author: