The structure of the chromosphere is studied primarily using filtergrams. Filtergrams are images of the sun taken through a filter that lets in a very narrow wavelength band of light, such as light emitted by the Hydrogen-alpha transition.
ChRoMoSpHeRe
Photosphere, Chromosphere, and Corona.
chromosphere
Chromosphere and corona
the core the photosphere the chromosphere the corona
ChRoMoSpHeRe
Chromosphere
the chromosphere
chromosphere
chromosphere
core-photosphere-chromosphere-corona
Photosphere, Chromosphere, and Corona.
chromosphere
Chromosphere and corona
Chromosphere
Chromosphere and corona
the core the photosphere the chromosphere the corona