White Light Filters

The white light Sun is actually a view of the visible spectrum emitted from the photosphere. The solar interior is opaque to light beyond this visible surface, which is not really a surface at all because it is composed of hot gas 4500–6000 degrees Kelvin. Within this shell a mere few hundred kilometers deep, we can view sunspots, granulation, and faculae. Using simple optical projection techniques or a solar filter, we can observe and record these intriguing features.