OAS holds monthly Star Parties (outdoor observing sessions) at Lake Zorinsky as part of the Astronomy in the Parks, weather permitting of course. OAS has a rural observing site called Astro Park near Weeping Water, Nebraska that is open to members. Astro Park is 4+ acres for the pure enjoyment of Astronomy. The site contains several member-owned observing buildings and concrete observing pads that allow the members to observe faint deep-sky objects, planets and the Moon without the blinding city lights.