The Birthplace of American Astronomy

See through the oldest public telescope in the country.

Mission & Vision Gift Shop 100 Things Winter Astronomy Camp



Welcome to the


We are a fully functioning 19th century observatory used daily by the public and amateur astronomers, civic organizations, teachers and students, scouts and history buffs. Open Monday through Friday 12-4 for you to explore, offer astronomy programs and stargazing Thursday & Friday evenings, and dozens of special events throughout the year.



A National Historic Landmark


When you explore the beautiful buildings and see through the large, historic telescopes, you'll step back in time and space. 

Watch our New Video






Looking for books, telescopes, and other spacey gifts?  Visit our gift shop during our daytime hours (M-F, 12-4pm)

And we're open Dec 17, 1-4pm and Dec 20 from 6-8pm too!

For more Info




100 Things to See in the Night Sky 


The new book by astronomer            Dean Regas is now available

Find Out More About The 100 Things






December 18-22

Spend a day or a whole week being an astronomer. For grades K-6.

For More Info



Mission & Vision
Gift Shop
100 Things
Winter Astronomy Camp

Join Us

Join, donate, and volunteer to make the "Birthplace of American Astronomy" a vibrant center for education and wonder

Public Events

See "What's Up" at the Observatory.  Each season has a new planet, star cluster, or nebula to explore

School Programs

Plan a field trip, schedule an outreach visit to your classroom, or gather the scouts for an evening at the Observatory