This comparison video starts with a view of the solar disc at ultraviolet wavelengths from the NASA Solar Dynamics Observatory. The final view of the disc comes from recent observations by ALMA at millimetre wavelengths.
NASA-SDO, ALMA (ESO/NAOJ/NRAO)
<a rel="nofollow" class="external text" href="http://www.eso.org/public/videos/eso1703b/">Comparison of the solar disc in ultraviolet and millimetre wavelength light</a>