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Application of Spectral. Filter Device in Measuring stellar in Daytime

Xu Weian(Changchun Institute of Optics and Fine Mechanics,Chinese Academy of Soiences,Changchun 130022)  
This paper summarizes the spectral characteristics of atmosphere and stellar as well asdetector CCD. In accordance with the spectral characteristics we have adopted the filter device to increase the contrast of stellar to the sky background,thus the ability for measuringstellar is evidently improved in daytime.
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