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Author: Russell G. Walker
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 44
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Book Description
SURVEY OF OBSERVATIONAL DATA ON INFRARED EMISSION FROM CELESTIAL OBJECTS IS PRESENTED AND CORRELATED WITH RECENT THEORETICAL CALCULATIONS. Spectral distribution of the radiation is analyzed with regard to departures from blackbody radiation predictions based upon effective temperatures and stellar spectral classification. Application of these data to infrared systems is discussed and the infrared background radiance values due to the galactic and solar systems are calculated. (Author).
Author: Russell G. Walker
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 44
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Book Description
SURVEY OF OBSERVATIONAL DATA ON INFRARED EMISSION FROM CELESTIAL OBJECTS IS PRESENTED AND CORRELATED WITH RECENT THEORETICAL CALCULATIONS. Spectral distribution of the radiation is analyzed with regard to departures from blackbody radiation predictions based upon effective temperatures and stellar spectral classification. Application of these data to infrared systems is discussed and the infrared background radiance values due to the galactic and solar systems are calculated. (Author).
Author: Stephan D. Price
Publisher:
ISBN:
Category : Celestial sphere
Languages : en
Pages : 96
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Book Description
The study of the infrared celestial background was conducted at the Mt. John University Observatory of the South Island, New Zealand, from October 1966 through October 1967. The instrument used for the survey of the sky at 2.2 microns from -30 degrees to the South Celestial Pole is a 24-inch, f/2 cast aluminum parabolic mirror, Kanigen-nickel coated, polished to one wave (1/4 wave in the infrared), and aluminized. The data gathered in the survey indicate that the southern sky is rich in objects bright in the infrared. In particular, a 2 x 4 minute of arc diffuse source was discovered in the direction of a dark nebula in the Milky Way. (Author).
Author: R. G. Walker
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 0
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Author: United States. Air Force. Air Matériel Command
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The purpose of this program was to extend and improve the present capability to predict celestial phenomenology pertinent to the design and successful operation of space based surveillance systems using the ultraviolet, optical, and infrared spectral regions. We pursued this goal through analysis and application of existing datasets and, in particular, by analysis of new satellite measurements that became available during the course of the project. Our work was concentrated in four major areas: (1) extension of an existing analytical model of the infrared point source sky (SKY), (2) development of a set of absolutely calibrated spectral stellar irradiance standards for the infrared, (3) analysis of new celestial data obtained by satellite, and (4) support of the infrared celestial measurements taken by the Midcourse Space Experiment (MSX) satellite. Volume 1 summarizes the work performed under the contract, and includes reprints of the major papers published during the contractual period. Volume 2 presents the final release of an all sky network of 422 stars with absolutely calibrated stellar spectra in the 1.2 to 35 um region. Volume 2 also contains reprints of the complete series of published papers documenting the spectral calibration process and assumptions.
Author: Russell G. Walker
Publisher:
ISBN:
Category :
Languages : en
Pages : 187
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Book Description
Author: R. G. Walker
Publisher:
ISBN:
Category :
Languages : en
Pages : 89
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Book Description
The purpose of this program was to extend and improve the present capability to predict celestial phenomenology pertinent to the design and successful operation of space based surveillance systems using the ultraviolet, optical, and infrared spectral regions. We pursued this goal through analysis and application of existing datasets and, in particular, by analysis of new satellite measurements that became available during the course of the project. Our work was concentrated in four major areas: (1) extension of an existing analytical model of the infrared point source sky (SKY), (2) development of a set of absolutely calibrated spectral stellar irradiance standards for the infrared, (3) analysis of new celestial data obtained by satellite, and (4) support of the infrared celestial measurements taken by the Midcourse Space Experiment (MSX) satellite. Volume 1 summarizes the work performed under the contract, and includes reprints of the major papers published during the contractual period. Volume 2 presents the final release of an all sky network of 422 stars with absolutely calibrated stellar spectra in the 1.2 to 35 um region. Volume 2 also contains reprints of the complete series of published papers documenting the spectral calibration process and assumptions.
Author: Russell Glenn Walker
Publisher:
ISBN:
Category : Bolometer
Languages : en
Pages : 112
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Book Description
Author: Russell G. Walker
Publisher:
ISBN:
Category : Bolometer
Languages : en
Pages : 106
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Book Description
A short review is given of the literature pertinent to the bolometric correction. A recommended scale of bolometric corrections is presented based upon recent model atmospheres for stars of early spectral type, and upon stellar energy distributions synthesized from photoelectric observations of stars later than FO V. The reduction of various photoelectrically determined magnitude and color systems to a common system and the further reduction of these measurements to absolute energy units is discussed in some detail. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 365
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Book Description
A retrospective is provided on space-based astronomy missions and the prominent role the US Defense Department (DoD), particularly the Air Force, played in early days of infrared astronomy and the technology development that was transitioned to the infrared astronomical community. The geophysics programs at the Air Force Cambridge Research Laboratories (AFCRL) and successor organizations (AFGL) at Hanscom Air Force Base are described in order to provide a context for the DoD infrared astronomy program. AFCRL and AFGL conducted the early mid-infrared probe-rocket based surveys as well as supporting related experiments under university contracts. The succession of subsequent orbital experiments is also described.
Author: United States. Air Force. Air Matériel Command
Publisher:
ISBN:
Category :
Languages : en
Pages : 187
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Book Description
