The World's Largest
In the following years, Hale's health became unpredictable; he stepped down from leadership of Mount Wilson and worked in a private observatory he built at home while writing on astrophysics for experts and for the general public. His final accomplishment typified his life aims. He brought the rival Carnegie (Mount Wilson) and Rockefeller (Caltech) foundations together to finance the 200-inch telescope built at the Mount Palomar site he helped select. It was Hale's third experience in establishing "the world's largest telescope."
George Ellery Hale died in Pasadena on February 21, 1928. The Palomar Observatory was dedicated ten years after his death containing the aptly named Hale Telescope.