Yerkes LionYerkes Lion YERKES OBSERVATORY
The University of Chicago

373 W. Geneva St, Williams Bay WI 53191 (Latitude 42 34.2, Longitude -88 33.4)
Look through a Telescope at the Moon, Jupiter, Stars, and More!
galaxy

The evening sky slowly changes with the seasons. Every month, throughout the year, Yerkes Observatory offers several evening observing sessions. Participants have the opportunity to admire the night sky seen both with the unaided eye and through a large 24-inch diameter reflector. In May, these will be held on some weeknights and some Saturday nights, but, as always, only if weather permits.
JUNE dates will be posted here the last week in May.

Observing dates in May run from 9:00 until 10:30 p.m. The dates scheduled are May 1, 2, 3, 4, 7, 8, 9, 14, and 15. The charge is $25 per person, payable the night of the event. Each session is limited to a total of ten, adults and children aged twelve and up. If you wish to attend, you must make an advanced reservation by calling Richard Dreiser at 262 245-5555, extension 880, or, by sending email to: rdd@yerkes.uchicago.edu

Participants begin outside with a brief introduction to the night sky as seen with the unaided eye. You may wish to bring a pair of binoculars to enhance your stargazing experience. From the dark confines of Yerkes Observatory, one may get superb views of planets, constellations, hundreds of stars, occasional sporadic meteor streaks, the Milky Way, and, the moving, bright International Space Station.

After observing outside, we enter the building and climb 39-steps of a spiral staircase up into the northeast tower. Here, through the 24-inch diameter reflector, we will observe brilliant Saturn and its moons, sometimes the Moon, and, perhaps a couple of celestial objects invisible to the unaided eye.

Participants should wear warm clothes as we will be spending time outside and within an unheated dome, and, early spring nights are chilly! Sensible shoes are highly encouraged: no high heels or flip-flops, please.

For information about regularly scheduled Saturday tours, weekday tours, and other events, please click here. The dates for JUNE observing will appear here toward the end of May.