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Synoptic maps in three wavelengths of the Chromospheric Telescope

Published online by Cambridge University Press:  03 March 2020

Andrea Diercke  and
Carsten Denker
Andrea Diercke
Affiliation:
Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany email: adiercke@aip.de Universität Potsdam, Institut für Physik und Astronomie, 14476 Potsdam, Germany
Carsten Denker
Affiliation:
Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany email: adiercke@aip.de
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Abstract

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he Chromospheric Telescope (ChroTel) observes the entire solar disk since 2011 in three different chromospheric wavelengths: Hα, Ca ii K, and He i. The instrument records full-disk images of the Sun every three minutes in these different spectral ranges. The ChroTel observations cover the rising and decaying phase of solar cycle 24. We started analyzing the ChroTel time-series and created synoptic maps of the entire observational period in all three wavelength bands. The maps will be used to analyze the poleward migration of quiet-Sun filaments in solar cycle 24.

Keywords

Sun: chromosphereSun: filamentsmethods: data analysistechniques: image processing
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium A30: Astronomy in Focus XXX , August 2018 , pp. 339 - 341
Copyright
© International Astronomical Union 2020

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