
All observing is done out in the open air, under the stars. Dress appropriately.
This is where we check our weather - you can check it too:
>>Forecast for Southold NY<<.
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, exhibit room, and gift shop. Frequent lectures, classes,concerts, art exhibits and other special events.





- Ridgewood Savings Bank
- The New York Community Trust
- The Joe & Hellen Darion Foundation
- The Harold Family Foundation

- Visit & Contact
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- Member Nights
- Our Equipment
- Custer History
- Radio Astronomy
- Music Project
- Eclipses and Transits
- Meteor Showers
- Custer Maker Space
- News & Resources


Updated: 11/25/23
Saturday Night Observing: Open 7pm-Midnight
JWST finds most distant supermassive black hole known (and it's WAY BIGGER than should be possible)
NASA Webb Telescope Team. Researchers have discovered the most distant active supermassive black hole to date with the James Webb Space Telescope. The galaxy, CEERS 1019, existed just over 570 million years after the big bang, and its black hole is less massive than any other yet identified in the early universe.
Skywatching Tips from NASA
NASA TV airs a variety of regularly scheduled, pre-recorded educational and public relations programming 24 hours a day on its various channels. The network also provides an array of live programming, such as 24-hour coverage of International Space Station events (spacewalks, media interviews, educational broadcasts), and rocket launches.