Draper developed an interest in astronomy from her husband and the two took the first photographs of the spectrum of a star using a large telescope Henry built at his observatory near their summer home in
Hastings-on-Hudson, New York in 1872. The couple traveled to
Rawlins, Wyoming to observe a
solar eclipse in 1878. During winters, the couple worked in the laboratory connected to their New York City home. For fifteen years, the Drapers worked together on observations, photography, and laboratory work. and
Henrietta Swan Leavitt, whose work on
Cepheid variable stars led to their use as important
galactic distance indicators. Mary Anna Draper also created an award for astronomical research, the
Henry Draper Medal of the National Academy of Sciences, and helped to found the Mount Wilson Observatory. She hosted scientific lectures and exhibitions at her home laboratory, and continued until her death of pneumonia in 1914 She also made a bequest supporting continued research at Harvard Observatory. == Notes ==