In 1725 Flamsteed's own version of "Historia Coelestis Britannica" was published posthumously, edited by his wife, Margaret. This contained Flamsteed's observations, and included a catalogue of 2,935 stars to much greater accuracy than any prior work. It was considered the first significant contribution of the Greenwich Observatory, and the numerical Flamsteed designations for stars that were added subsequently to a French edition are still in use. In 1729 his wife published his "Atlas Coelestis", assisted by Joseph Crosthwait and Abraham Sharp, who were responsible for the technical side.