Ghost of a flea

This photo is of the Amundsen-Scott South Pole Station taken every 15 minutes (if a relay satellite is available for transmission) from the roof of the Atmospheric Research Observatory which houses NOAA/CMDL's Clean Air Facility. In order to preserve the life of the camera, it is tilted down onto the snow when the sun is in the field of view, which occurs for several weeks around sunset (March) and sunrise (September) when the sun marches in a circle above the horizon. From mid-April until mid-August the moon and the aurora australis provide the only natural lighting.