A Glimpse into the Layers of the Sun

The passion for capturing our sun lies not only in its inherent beauty but also in the astounding ability to record its multifaceted nature using different wavelengths, each situated at opposing positions within the electromagnetic spectrum.

It’s truly remarkable to be able to capture two distinct perspectives of the sun, each revealing a unique panorama of its intricate atmosphere. In this comparison, we can observe the sun on the left in the calcium K-line, located in the ultraviolet, and on the right in the light emitted by hydrogen-alpha, situated in the red. These two distinct wavelengths grant us an unparalleled view of the intricate layers of the sun.

In ultraviolet light, dynamic sunspots and plages regions are revealed, extending like spiderwebs around active regions, creating intricate patterns across the solar landscape. Yet, an even grander spectacle lies within the Ha wavelength. Here, we not only see sunspots but also witness the dance of sinuous filaments twirling around intense solar magnetic fields.

However, we should not merely regard this image as a snapshot depicting our highly active sun. Instead, this particular moment, nestled within the context of the new solar cycle 25, hints at the sun’s temperamental nature and the surprises it may unveil as we approach its peak, projected for 2024 or 2025.

In a way, this image encourages us to contemplate that, though the sun may appear unchanging, it is, in fact, an enigmatic celestial body undergoing a continuous process of transformation.

To take this picture I used a Coronado Solarmax II 90mm aperture solar telescope and a Sky Watcher Esprit 120 telescope with a Lunt B1800 calcium module, in both cases I used a ZWO 183MM camera.

Autore: Eduardo Schaberger Poupeau (sito)