Directions to Allegheny Observatory

Explore the heavens and a historic scientific landmark during the Sept. 30 open house at the University of Pittsburgh's Allegheny Observatory. The free open house is from 7 to 10 p.m. with groups entering every half-hour; reservations are required, and tickets are available beginning at 9 a.m. Aug.1,412-321-2400 between 1 p.m. and 5 p.m. NOTE Lou Coban informs to register early as this is an annually sold event.