The Sun emits light in all colors. Our eyes are what limit us when it comes to studying alternative wavelengths of light. Studying the Sun is a great way to blend chemistry with astronomy in a visual form. Using certain filters let us explore the Sun's many hidden colors.
In this image we see the Sun in UV light, this band of light is called Calcium K (CaK). This wavelength of light allows us to study sunspots and magnetic areas within the Sun's lower atmosphere (chromosphere). These filters display the Sun in a deep violet color as seen in the image. But what are we actually seeing?
Calcium filters allow us to see the absorption of light from ionized calcium. When calcium becomes ionized it absorbs light. When this occurs it causes a blue glow giving us what we see here. #focus #focusastronomy #blue #purple #sun #bluesun #ultraviolet #UV #colors #light #spectrum #astronomy #spectra #rainbowatwork