The Birthplace of American Astronomy

See through the oldest public telescope in the country.

Mission & Vision Late Night Date Night Blue Moon Classes



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




See Mercury and Venus 


March 18 from 7:30-8:30pm

The two planets closest to the Sun line up and you can see them with us

More on Mercury and Venus




Blue Moon


Saturday March 31, from 8-10pm

Bring your friends and family to the Observatory for a Blue Moon rise


Howl at the Blue Moon






April 14 and 27,10:30pm-Midnight

The hottest ticket to the Observatory is back!  Spend a romantic night under the stars.

Stay Up Late



Mission & Vision
Late Night Date Night
Blue Moon

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