June 1, 2009 | This photo, taken by Carlye Calvin, shows the courtyard in front of FL0.

February 10, 2009 | This photo, taken by Carlye Calvin, shows the spiral staircase in FL3.

December 10, 2008 | This photo gives a view of the sky looking through the lens of ESSL/HAO's MK4 K-Coronameter, a telescope at the Mauna Loa Solar Observatory that retrieves white-light images of the lower reaches of the Sun’s halo, called the corona.