National Geographic : 1919 Aug
170 THE NATIONAL GEOGRAPHIC MAGAZINE *" MAGNITUDESTARS ' * A . -- 4 . / OF THE .T ,X *. * H. -o. . ,.. HEAVEN: .gTH .. ,/ / JULY 30TH II PM SUMMER TIME itE DOUBLE. TRIPLE AND QUADRUPLESTARS OI ~ I AUG. 2ST 9 PM o CLUSTERS AND NEBULAE SEPT. 14 TH 8PM Drawn by Albert I. Bumstead, O National Geographic Society A CHART OF TIIE IIEAVENS AS THEY WILL APPEAR TO RESIDENTS OF THE UNITED STATES AND SOUTHERN CANADA AUGUST 15 AT 10 P. M., AUGUST 22 AT 9.30 P. M., AUGUST 29 AT 9 P. M., AND SEPTEMBER 5 AT 8.30 P. M. The lines on this chart corresponding to meridians are separated from each other by the distance the stars appear to move across the sky in one hour. The lines corresponding to parallels show the direction of the stars' paths from the time they rise to the time they set. By remembering that the stars within the space bounded by two meridian lines sink into the western horizon every hour, and that a corresponding stretch of new sky arises out of the eastern sky in the same time, the major portion of the chart will be usable hours after the time named. This, of course, does not apply to stars near the North Pole, like the Great Dipper. They never set-the daylight merely puts them to sleep. Do you belong to that innumerable throng who have never made personal friends of the stars? If so, you are missing one of the easiest and most delightful diversions of evenings in the open. The first formality is to meet the Great Dipper, which might be called the supreme announcer. Its pointers, Merak and Dubuhue, will then escort you over to Polaris, king of celestial directions. All the roads of heaven lead to his throne and all the highways of earth are oriented with reference to his position (see pages 173-179).