Synoptic maps in three wavelengths of the Chromospheric Telescope
Abstract
The 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.
- Publication:
-
IAU General Assembly
- Pub Date:
- March 2020
- DOI:
- 10.1017/S1743921319004551
- Bibcode:
- 2020IAUGA..30..339D
- Keywords:
-
- Sun: chromosphere;
- Sun: filaments;
- methods: data analysis;
- techniques: image processing