Infrared Extinction and Standardization PDF Download

Author:
Publisher:
ISBN:
Category : Infrared astronomy
Languages : en
Pages : 79

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Author: E.F. Milone
Publisher: Springer
ISBN: 9783662137123
Category : Science
Languages : en
Pages : 79

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Book Description
Extinction and standardization corrections to infrared measurements are of the utmost importance in astronomy. Various views on these concepts and problems of implementation in infrared photometry are discussed thoroughly and recommendations are presented. Among these are: the adoption of narrower broad-band "Johnson" filters that are better centered in the atmospheric water windows than is currently the case; the measurements of atmospheric water vapor content concurrent with the astronomical measurements; the use of appropriate atmospheric models to treat the extinction adequately; and the publication of complete details of the systemic passbands and their transformability to other systems. To conclude the volume, R. Bell summarizes and comments on the contributions to the symposium, and the editor adds a concluding postscript on post-meeting developments and perspectives.

Author: Derek McNally
Publisher: Springer Science & Business Media
ISBN: 9400904975
Category : Science
Languages : en
Pages : 937

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The XXth General Assembly of the International Astronomical Union was held in Baltimore, Maryland USA from August 02 to 11, 1988. The Inaugural Ceremony on August 02 was held in the presence of representatives of the United States Governn:ent, t~e S~ate of Maryland, the City of Baltimore and the host institution -the Johns Hopkins Umverslty- as well as of the National and Local Organising Committees. The scientific programme maintained the high standards of the Union and the scientific proceedings may be found either in this volume or in volume 8 of Highlights of Astronomy. The scientific programme was organised by the 40 Commission Presidents and coordinated by the General Secretary (1985-1988), Dr. J.-P. Swings. The local arrangements were effectively made through the National Organising Committee under the Chairmanship of Prof. F. Drake and the Local Organising Committee under the co-Chairmanship of Prof. A. Oavidsen and Dr. R. Giacconi. The smooth day to day operation of the meeting resulted from the incomparable dedication of Karen Weinstock and Harold Screen.

Author: K.N. Rao
Publisher: Elsevier
ISBN: 0323159214
Category : Science
Languages : en
Pages : 247

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Wavelength Standards in the Infrared is a compilation of wavelength standards suitable for use with high-resolution infrared spectrographs, including both emission and absorption standards. The book presents atomic line emission standards of argon, krypton, neon, and xenon. These atomic line emission standards are from the deliberations of Commission 14 of the International Astronomical Union, which is the recognized authority for such standards. The text also explains the techniques employed in determining spectral positions in the infrared. One of the techniques used includes the grating constant method of determining spectral positions which measures the angular rotation of the grating. Another technique used is the modern gratings and high resolution infrared spectra which has made it possible to obtain narrower spectral lines. Computers can expedite the processing of observed data. Fraley and Rao have developed a procedure for data, obtained using double-pen recorders. The technique involves using visible neon lines to produce a wave number scale on the infrared spectra that is to be measured. This book can prove valuable to researchers and scientists working in the field of molecular, nuclear or atomic physics.

Author: Terry Brown
Publisher:
ISBN:
Category :
Languages : en
Pages : 96

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A climatology of extinction coefficients for the 3-5 and 8-12 micrometer bands is presented for the North Atlantic Ocean region. Isopleths of mean extinction coefficients are provided for each month. Contours of the standard deviation of the extinction coefficients are given for the months of January and July. The magnitude of the standard deviation frequently exceeds the mean value, and indicates the extreme variability of infrared extinction in this region. (Author).

Author: Christiaan Sterken
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 674

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These proceedings from the May 2006 conference focus on the present status and the future of standardization and calibration of these fields, including the production process for those standards and the construction and use of calibration apparatus. Topics include the basic concepts of standardization; the construction, calibration and maintenance of photometric systems; sky surveys in photometry; standardization of spectrophotometry; spectrophotometric and photometric absolute flux calibrations; standardization for the infrared; standardization of polarimetry; synthetic data and models; reduction techniques, procedures and methods; standardization of unusual objects such as supernovae and variable stars; and recommendations for the future. The editors have provided object, subject and author indices and have dedicated this volume to Arlo U. Landolt in commemoration of his life's work.

Author: Bozzano G Luisa
Publisher: Academic Press
ISBN: 0323139094
Category : Science
Languages : en
Pages : 727

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This timely compilation of infrared standards has been developed for use by infrared researchers in chemistry, physics, engineering, astrophysics, and laser and atmospheric sciences. Providing maps of closely spaced molecular spectra along with their measured wavenumbers between 1.4vm and 4vm, this handbook will complement the 1986 Handbook of Infrared Standards that included special coverage between 3 and 2600vm. It will serve as a necessary reference for all researchers conducting spectroscopic investigations in the near-infrared region. Key Features: - Provides all new spectral coverage between 1.4vm and 4vm - Comprises over 500 pages of spectral maps and accompanies wavenumber tables - Includes a useful study of the heterodyne frequency measurement - Provides an update of OsO4 measurements using saturation absorption spectroscopy - Features easy-to-read spectral maps to help locate information at a glance

Author: National Institute of Standards and Technology (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 492

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Author: Immo Appenzeller
Publisher: Springer Science & Business Media
ISBN: 9400901631
Category : Science
Languages : en
Pages : 912

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Book Description
IAU Transactions XXIIB summarizes the work of the XXIInd General Assembly. The discourses given during the Inaugural and Closing Ceremonies are reproduced in Chapters I and III, respectively. The proceedings of the two sessions of the General Assembly will be found in Chapter II, which includes the Resolutions and the report of the Finance Committee. The Statutes, Bye-Laws and a few working rules of the Union are published in Chapter IV. The Accounts and other aspects of the administration of the Union are recorded in Chapter V, together with the report of the Executive Committee for this last triennium, and provide the permanent record for the Union in the period 1991-1994. This volume also contains the Commission reports from The Hague compiled by the Presidents of the Commissions (Chapter VI). Finally, Chapter VII contains the list of countries adhering to the Union and the alphabetical, geographical and commission membership lists of about 8000 individual members. The IAU still appears to be unique among the scientific Unions in maintaining this category of individual membership which contributes in a crucial way to the spirit and the aims of the Union.

Author: Guy Guelachvili
Publisher: Academic Press
ISBN: 0080886728
Category : Science
Languages : en
Pages : 925

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Book Description
The development of infrared standards is an ongoing process in laboratories throughout the world. This handbook provides lists of standards based on spectra of easily available molecular species, from the upper end of the microwave region to the near infrared. The Introduction contains tables of saturated absorption spectroscopy data and heterodyne frequency measurements; The main body includes, in an easily accessible format: Spectral maps, Wavenumber tables, Transition assignments