We are pleased to announce that the winner of the ESPD Media of the Month contest for September is Kevin Reardon (National Solar Observatory), with the following image of the chromosphere of an active region:

Description: This is an image of solar chromosphere covering 166 Mm x 166 Mm taken in the core of the Hydrogen-alpha 6563 Å spectral line with the Interferometric Bidimensional Spectrometer (IBIS) at the Dunn Solar Telescope, operated by the National Solar Observatory, in Sunspot, New Mexico. It shows the dark sunspot, but also many fibrils which are thought to indicate the expanding magnetic field connecting regions of opposite magnetic polarity.

See full resolution image on Wikimedia Commons.