Royal Collection Trust/© Her Majesty Queen Elizabeth II 2014
Photograph of Reginald James (1891-1964) standing on the left and Captain Frank Worsley (1872-1943) who kneels as he uses a tripod mounted piece of apparatus. Both men work alongside the "Endurance" on the right of picture.
The physicist Reginald James and Captain Frank Worsley took advantage of the clarity of the Antarctic darkness to ’take occultations’ during the winter months. This included observing the local time at which the moon obscured certain stars, and comparing their results with the recorded times in the Astronomical Almanac.