Show ES arvard observatory sets centennial BOSTON long known as the western hemispheres patrolman of the skies the harvard college observatory atory ry will note the anniversary of its founding at a tour day celebration december 2730 27 30 in connection no C tion with the event two science conventions are scheduled here first planetarium in the world to P photograph huto graph the stellar activities of 0 the sky the observatory was completed in 1846 since then it has hag be come the central clearing house for or all astronomical information on this continent beginning in 1880 the observatory has photographed huge sections of the sky each night As a result it has a collection of photograph plates numbering more than which enables astronomers to check the stellar activities which have occurred during any cliar clear evening of the past 66 year |