THE SCANNER FOR PRECISE SPECTROPHOTOMETRY OF THE SUN AS A STAR

THE SCANNER FOR PRECISE SPECTROPHOTOMETRY OF THE SUN AS A STAR

The primary shortcomings of existing methods for spectrophotometry of the Sun as a star are discussed. A new observational method is proposed. This method is based on a repeated scanning of the Sun's image while summing the signal of each step across the solar disk. A device for precise spectro...

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Veröffentlicht in:Solar physics 1997-05, Vol.172 (1-2), p.361-370
Hauptverfasser: Osipov, S N, Gandzha, S I, Andriyenko, O V, Karpov, M V, Kostik, R I
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Solar physics
Spectrophotometry
Stars & galaxies
Studies
Sun
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container_end_page 370
container_issue 1-2
container_start_page 361
container_title Solar physics
container_volume 172
creator Osipov, S N
Gandzha, S I
Andriyenko, O V
Karpov, M V
Kostik, R I
description The primary shortcomings of existing methods for spectrophotometry of the Sun as a star are discussed. A new observational method is proposed. This method is based on a repeated scanning of the Sun's image while summing the signal of each step across the solar disk. A device for precise spectrophotometry of the Sun as a star has been developed around a double-pass spectrograph. This device and its operation algorithm are described. Errors caused by scanning irregularities and seeing are estimated. Several Sun-as-a-star spectrum line profiles and their bisectors are presented and compared with the same ones from the Kitt Peak FTS solar flux atlas.[PUBLICATION ABSTRACT]
doi_str_mv 10.1023/A:1004979717074
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subjects Solar physics
Spectrophotometry
Stars & galaxies
Studies
Sun
title THE SCANNER FOR PRECISE SPECTROPHOTOMETRY OF THE SUN AS A STAR
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