Welcome to the Custer Institute & Observatory

Long Island's oldest public observatory (est. 1927)

For the Curious

The Custer Institute and Observatory is Long Island's oldest public observatory (est.1927). Open to the public every Saturday evening from dusk until midnight, our staff of volunteers will give you a tour of the facilities and the night sky through our powerful telescopes. Custer has a library, museum, and gift shop. Frequent lectures, classes,concerts, art exhibits and other special events.

Custer Links

Saturday Night Observing: Open 7pm-Midnight

Check our weather and the moon phase

Coming soon! We are currently remodeling the room, furnishing it, and doing behind the scenes work.
Any questions regarding Radio Astronomy at Custer, email Justine Haupt: justine.haupt@gmail.com

New Radio Telescope at Brookhaven Lab Sees Space in a Different Light

In the meantime, listen to Jupiter...

What is Radio AStronomy?