Tentative Open Houses are on a clear weather and member availability basis. Check our main site the day before and day of the tentative open house for the most up-to-date status of the open house.

We can only set up the telescopes and open the observatory if it's clear out. We still run observatory tours, presentations, and planetarium shows, rain or shine. Weather Channel Forecast

Facilities include a 0.4 meter Ritchey-Chretien reflector in the main observatory, as well as one or two 8-inch Schmidt-Cassegrains set up on the rooftop. From light-polluted Ann Arbor the best subjects for viewing are typically the planets, the moon, the constellations, and colorful binary stars systems. We also can show you a few of the brighter nebulae, star clusters, and galaxies in the sky. Visitors are encouraged to bring binoculars and lots of questions for the undergraduates. Keep in mind that the objects we can observe depend on the time of year so there are new things to see at each open house!

Angell Hall is also home to a new planetarium, installed in August 2004. It projects more than 7000 stars, the sun, moon, planets, the milky way, and star clustes. Come see what the night sky looks like without light pollution! Planetarium shows are held during all open houses rain or shine. Both the planetarium and the main observatory are wheelchair-accessible, but the rest of the rooftop teleswcopes are not.