AESSIM, the Absolute, Extreme-Ultraviolet, Solar Spectral Irradiance Monitor, is designed to measure the absolute solar spectral irradiance at extreme-ultraviolet (EUV) wavelengths. The data are required for studies of the processes that occur in the earth's upper atmosphere and for predictions of atmospheric drag on space vehicles. AESSIM is comprised of sun-pointed spectrometers and newly-developed, secondary standards of spectral irradiance for the EUV. Use of the in-orbit standard sources will eliminate the uncertainties caused by changes in spectrometer efficiency that have plagued all previous measurements of the solar spectral EUV flux.


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    Title :

    Absolute, Extreme-Ultraviolet, Solar Spectral Irradiance Monitor (AESSIM)


    Contributors:

    Published in:

    Publication date :

    1988-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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