Prenuptial portrait of David Todd and Mabel Loomis. David Peck Todd (March 19, 1855 - June 1, 1939) was an American astronomer. He designed and erected several observatories, including those at Smith College and Amherst College. He established Standard Time in Peru in 1907. He was chief astronomer at the Lick Observatory during the transit of Venus in 1882, and created the first known photographs of the transit. In addition, Todd was the organizer and leader of a number of important astronomical expeditions: The American expedition to Japan for solar eclipse of August 19, 1887, The Amherst expedition to Japan for the solar eclipse of August 9, 1896, The Lowell expedition to Tripoli for solar eclipse of May 28, 1900 and The Lowell Mars expedition to the Andes, 1907 to name just a few. He married Mabel Loomis in 1879, and had one daughter, Millicent. Mabel Loomis Todd (November 10, 1856 - October 14, 1932) was an American editor and writer. She is remembered as the editor of posthumously published editions of Emily Dickinson. She had a lengthy affair with Emily's married older brother William Austin Dickinson. The affair was an open secret in Amherst, and David Todd seems to have accepted it willingly. No photographer credited, 1870s.